Malicious PDF — malware analysis report

Static analysis result for SHA-256 2734b1ba68301ebe…

MALICIOUS

PDF

91.0 KB Created: 2021-06-30 03:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 587695ac2d1da3e4d32466a8e22f54e6 SHA-1: b43965e033434911b2ab2eab7a3dc49b3b4e6cc4 SHA-256: 2734b1ba68301ebef1a77c47938cf07b29d980b0da6f3d669ea47134f2390571
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable domains. These links are likely intended to lure users into clicking them, potentially leading to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://georgekoldun.com/var/upload/file/55674792372.pdf In PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16074513323299---23751648779.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084057917bea---bisozilogajevifafozam.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/tq74entkaf3fsdfv9hcgp382ge/mavuf.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c3c9235f6---30202358836.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c73ef382f7---23939772089.pdfIn PDF document text
    • http://novichiha.ru/pic/file/juwupoxorawip.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/6403f9a856aaf9f64ce2ab03645b694f/4621322081.pdfIn PDF document text
    • http://detaycopymatbaa.com/userfiles/file/xiponunixepafizaje.pdfIn PDF document text
    • http://kaupa.cz/userfiles/file/24208764972.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/6c7d1e09f62ddfdd5afc6e9bb4717d20/tuvazujubawiwi.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c7efacfd3b---39429199756.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/72669329966.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/3f0h85i4tfs52a2gbs96q13u54/laxali.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160afdad04f337---48432656297.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/nnouk8lih5ducqfpf4vl15o4v7/pitusukaxata.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/5923462575.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086ca31abbf0---62053032874.pdfIn PDF document text
    • https://irepairplus.nl/app/webroot/files/userfiles/files/valuzozabipuzenerafo.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/30528354706.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/0ab4788869fe1e0500915f9b031be92c/16224225210.pdfIn PDF document text
    • http://lltsg.com/uploadfile/file///2021052907225431.pdfIn PDF document text
    • https://abeess.com/userfiles/file/57629098981.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072778b76a4d---nivoruzeviboxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=dashing+means+in+englishPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64B 10240 bytes
SHA-256: ec39acef737873883827eac7505bc4577fab7619e0ff67e72acc7ec66fea4b38
font_01_sfnt_off0000ed06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED06 16640 bytes
SHA-256: d5134dbad59fc622619cd949f891a46cbda75a780aae8a899e4883538c58d9fc
font_02_sfnt_off0001045f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045F 20864 bytes
SHA-256: 9b27d24d4f8dcb92343bac7919f918aeeb50d822e610d1f6ef8b1d8da71ab60c
font_03_sfnt_off0001391d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1391D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off0001512a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1512A 3028 bytes
SHA-256: 5b147870ed8bdba40b46b960f5812b3a00c667733e343f114f32ca1debe70402

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