Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e4e00f13448c96…

MALICIOUS

PDF

84.0 KB Created: 2021-03-24 16:26:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 03f80f2a428990eef3a8c31e3536cd9a SHA-1: da5bb049e2a94c7f5a069bd9606a0eedfacd88b7 SHA-256: 09e4e00f13448c961dd16aca6b6348f5b2648676b38d18a42ba1f397008626c6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable hosting and exhibiting link farm characteristics, strongly suggesting a phishing or scam operation. The ML classifier and ClamAV detection further confirm its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/award?keyword=max+life+online+term+plan+plus+pdf PDF link annotation
    • http://nibajafij.medianewsonline.com/what_is_the_name_of_tokyo_ghoul_season_5.pdfIn PDF document text
    • http://xekepova.iblogger.org/84431006449.pdfIn PDF document text
    • http://xenipufuk.22web.org/ctags_c_templates.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/barbara_minto_pyramid_principle.pdfIn PDF document text
    • http://napowojeba.medianewsonline.com/sotodekutijiforokilana.pdfIn PDF document text
    • http://wopexobow.mywebcommunity.org/jonugudukelaxelagov.pdfIn PDF document text
    • http://fulokixowo.scienceontheweb.net/benami_transaction_act_1988.pdfIn PDF document text
    • http://gajonedorebuko.mywebcommunity.org/liles.pdfIn PDF document text
    • http://xakubilowiva.22web.org/certificat_de_cession_vhicule_gratuit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://41fe7446-7195-45c8-906d-de5e784989f9.filesusr.com/ugd/e02969_c97cd8d7c26244be864d08cfe08f93cc.pdf?index=trueIn PDF document text
    • http://sesilav.rf.gd/contrastive_analysis_articles.pdfIn PDF document text
    • http://jemileti.atwebpages.com/vejajagopagizuf.pdfIn PDF document text
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_641ccf243df24f1f9e73bc6e39ced3b6.pdf?index=trueIn PDF document text
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_4b9e5b99091b48cb92edfec65f23ea8e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae4128cf-b203-4b47-b6c8-ae9d9d55961c/23060486325.pdfIn PDF document text
    • https://1160a196-6e18-49bd-931c-438029629b47.filesusr.com/ugd/40338c_c0d66c670a354802b42bb71708fa0873.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/85859c98-67a5-4d19-a603-7fa247583c57/countable_and_uncountable_nouns_practice.pdfIn PDF document text
    • http://nomapalugaji.epizy.com/badagasaxodel.pdfIn PDF document text
    • http://tojegazanet.rf.gd/antioxidant_activity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/920b57e9-ddb0-4bea-8be6-cd5b132f95c1/is_the_roomba_worth_the_money.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE2 5144 bytes
SHA-256: f9bf6b17512671c52e3a20e436981a379b3bbf18cf1f4a87709c8a81a25f4a9b
font_01_sfnt_off00010d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4A 11564 bytes
SHA-256: cab37e1126f0519e053a4a9be03af7003cb1bd1b4fb24c21f13182419d69a6e8
font_02_sfnt_off00013472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13472 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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