Malicious PDF — malware analysis report

Static analysis result for SHA-256 83482e6554cfc7fd…

MALICIOUS

PDF

101.1 KB Created: 2021-06-30 22:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4a9d489ce77385796d7235c3ad9904e2 SHA-1: 241395337bf24c7a4be45df4b15dd0f5aad82840 SHA-256: 83482e6554cfc7fda6ef494501f5a7701f85875f3f9db43ad1c6dd978ae05695
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting an attempt to redirect users to malicious sites. The embedded URLs indicate a link farm strategy, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://garglob.ru/uplcv?utm_term=finding+complex+solutions+of+polynomial+equations PDF link annotation
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8d5434f266411840a7a97ace93cbfc07/8038475385.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/dc7118fbb9094a8c2c4f9d048b698b7b/gunovakavilubupomelezoke.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/76036729968.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606d40aab1c5b---66813245585.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160a60d6876de6---xerixabenuzib.pdfIn PDF document text
    • http://short-story.ru/upload/file/muwedifijemogolugepexu.pdfIn PDF document text
    • http://suapaiatuipelehakefamily.com/clients/80707/File/bidaxuwasedile.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/3r6rahhoi9mkb3jvr76tv2dk26/16979745349.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607c317043d80---2828417244.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077de26e6e32---57772429132.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8b070bcb2bb0708c767649b46f4bb298/gidanimowalotikosal.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/3b54c73e91b966cba4bed66c8aa5dbd3/61725848647.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/5651677643.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078721e0ee34---74935516874.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b52b600fda---11307273084.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/7bc221565ac68de7e0d91434f968ea40/32189813847.pdfIn PDF document text
    • https://hijaulumut.com/contents//files/73522747404.pdfIn PDF document text
    • https://2acontractor.it/images/file/98044745472.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/ll9um8jtmqn8pcg07hofdc8jb4/sosemebaxodibeji.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f950f44fa9---supopodozevutawekugo.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12097 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000138ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138AE 11300 bytes
SHA-256: cf586712a3be8d7d5d7f89735aa781eebb1f1610eceaeaae8515ceb6a950429e
font_02_sfnt_off000152b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152B7 19968 bytes
SHA-256: 51c884fcd613cfc8917e7b6049c9bdd62fb69b0a46ee98c3c3c73659ade1dadc

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