Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c574ff43a7906ed…

MALICIOUS

PDF

90.1 KB Created: 2021-06-26 10:02:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 02396368c1c6f04f267559be24871f43 SHA-1: a60d9892d07c9c7cc3fa04e3c1628ea0115484ac SHA-256: 2c574ff43a7906edd4a430306644d5b6a59d061a3e068c4fb6020bb89833d196
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution campaign. The presence of PDF-specific heuristics like 'PDF_URI_IP_LITERAL' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, as these are common tactics for redirecting users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://master.plus/wp-content/plugins/super-forms/uploads/php/files/e6ec426d0f00d07bff04102bf687466c/laxigojuduzedevovor.pdf In PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/55cfb0b0f6de41e71881a23bc47e3d2d/54524203604.pdfIn PDF document text
    • https://marblobathware.com/app/webroot/img/files/82879279357.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d122088069---luboxezotonusebidimovo.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849975b997e---fugemodilurubabitaga.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/82158173079.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072137c4d782---15383281265.pdfPDF link annotation
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160982be9cb62f---kaliku.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac46aab6400---xinobezejediti.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606ceeb45c5dc---24606942521.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/os24hgj2b1bvt48dfva3qeibi9/69132061250.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607d44365aa69---zexifikifezafigenulelumo.pdfIn PDF document text
    • http://kasintorn.com/images/upload/files/34257067796.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa931d6f0e---14158177767.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/8839e0e19a2b0077d5a0b722ce1ecbe7/1990240755.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/a938d44b82ab70344938f77bd0702787/vamit.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/44108f7c4d4ca7802fc15e086d916020/222286562.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/8ada241cdca5946b2b16710fbe6daa1e/nunurusuzilogu.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/d8e7d06dc3e4a133cbc1fe3184b455ca/45141620258.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/tokagowexalefitugojirad.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e9bb65aa11bf8c54844cc4fbf4dcfa8c/kenir.pdfIn PDF document text
    • https://edcasys.com/ci/userfiles/files/16567380841.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/317166b713c112839c4a54394c2321ba/wipur.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b3502aa4a---xojinuxafetesawofaledodaz.pdfIn PDF document text
    • http://exclusivelimoservice.com/ckfinder/userfiles/files/fitekilomabigoxu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=mcq+with+answers+on+interpretation+of+statutesPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE622 16228 bytes
SHA-256: f2666e95f4599b990980a0abf2f374fe3006e34437484733904d739abeeb93bf
font_01_sfnt_off0000fc07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC07 10856 bytes
SHA-256: 0bc653e1e0e3e6cedbecbf4fa8884194183a460526aae08cd3ce67ec905ba977
font_02_sfnt_off0001152a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1152A 17324 bytes
SHA-256: b98b11b1f1fac0ebe5947e88e6f77cec43a78a052954572544efef6d6cfac27a
font_03_sfnt_off0001426d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1426D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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