Malicious PDF — malware analysis report

Static analysis result for SHA-256 62be8560e2964f2d…

MALICIOUS

PDF

83.9 KB Created: 2021-06-29 17:26:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e713b89a3a5f5dc3997333da66eb74cf SHA-1: 432161b415edfe99ba8bba27ac6b51d37564ba07 SHA-256: 62be8560e2964f2d15de467a431f5740937cbc151193b0ecc32214ce82832ad9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised websites, likely intended to host and distribute further malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic to obscure the true origin of the malicious links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c89c9572512---1356147022.pdf In PDF document text
    • http://mahnomenalumni.com/clients/879209/File/46707360181.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/zurufexidigawidevawovidig.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e56954197d---wuvagatatatenitewavo.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/d5r8qta0rtvsmu45fi2r2n9ngo/kigiru.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/0c083217da77f00b2770dacc202918c8/11472748538.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/52013742105.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ab819d1cf60---sajudefubabovoxigirevud.pdfIn PDF document text
    • https://isosklo.cz/uploads/78963831538.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609bf656ec61d---zipixogabivemosuduramotos.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085cdabe7856---31438239809.pdfIn PDF document text
    • http://learningkey.org/userfiles/49173704669.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c717acdefd---pifuxutinabepi.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6028dc660---33552411837.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/36a6c47c0231a839c5170a15eb535a88/zeriwejaganoxigisifiwex.pdfIn PDF document text
    • https://eventaipei.com/upload/files/51721166376.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/goh8ohocsih7uk0cpis93hbcj6/12708843142.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/mmv2udc7vu2phpj8l89vuqkaom/1717228230.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/45313163167.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/vd2shj3vk2vkm4j6nnmvr9ej16/74465111966.pdfIn PDF document text
    • https://bombapin.com/calisma2/files/uploads/78183781011.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a9b68d529---jugapofalokakunewiza.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/33918888925.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=audacity+for+catalinaPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE372 10364 bytes
SHA-256: 67fec9b4eaa0b3e2f17007e64ce2ce5d0eb041c29462396368488df03f7df7e0
font_01_sfnt_off0000fafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001130e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130E 19008 bytes
SHA-256: 326b02671f33604ad64db1a1c9cd0fc874fb0976a5beb1fb77780254f7045a5b

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