Malicious PDF — malware analysis report

Static analysis result for SHA-256 34dcd2d12f422eb8…

MALICIOUS

PDF

74.4 KB Created: 2021-02-17 18:46:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: be4fb89cb8b39f9fa68017d97df63ad5 SHA-1: 0e4ea08a47859228b975c5a49b9d62aae2ec2c75 SHA-256: 34dcd2d12f422eb875d112c3e7edf31cbfefebf77248ea783e622c2076bc7b9d
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/aws?utm_term=body+for+life+approved+food+list+pdf PDF link annotation
    • http://xtreme-sport.ru/milton_bradley_electronic_battleship_instructions11151.pdfIn PDF document text
    • https://menudobuwowewil.weebly.com/uploads/1/3/4/7/134765252/5f3830edf9ba7c5.pdfIn PDF document text
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/lubuvilo.pdfIn PDF document text
    • http://hugertely.xyz/rubik_snake_ball_instructionsibzfq.pdfIn PDF document text
    • https://bifixebuwo.weebly.com/uploads/1/3/0/7/130776276/dupixemedijupo.pdfIn PDF document text
    • https://wejafivikime.weebly.com/uploads/1/3/0/9/130969279/0ae14cc.pdfIn PDF document text
    • http://ionatr.space/48442094267a5cro.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/4981754.pdfIn PDF document text
    • https://jevejokanidepit.weebly.com/uploads/1/3/0/9/130969277/telilazabusel-tubuvixeje-visepa.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/icA9LcQ/79304580965.pdfIn PDF document text
    • http://nikaold.site/308630533v23i7.pdfIn PDF document text
    • http://normal-id.com/1537476668bfq9c.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/cJ4jbia/telephone_ringtone_download_free.pdfIn PDF document text
    • http://miiliioner.xyz/luzobumuxipoz0pcwt.pdfIn PDF document text
    • http://particulieres-societegenerale.best/resource_bundle_android_examplegq8t7.pdfIn PDF document text
    • http://bbcua.site/975835453115hxqb.pdfIn PDF document text
    • http://copyrightproblem.com/perfect_modals_rephrasing_exercisescs5lo.pdfIn PDF document text
    • https://matamelo.weebly.com/uploads/1/3/1/3/131384575/pufisulam.pdfIn PDF document text
    • https://zikepasut.weebly.com/uploads/1/3/4/1/134108801/vomasuxetos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://metukobitoro.rf.gd/access_archived_facebook_messages_on_android.pdfIn PDF document text
    • http://kobinegugagikag.epizy.com/fovulejimajaremoni.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE601 5244 bytes
SHA-256: 3a6fe75cd60f6831261dce10eeae328508fbd4005cab2783fea0b72faf6958fd
font_01_sfnt_off0000f7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F9 10644 bytes
SHA-256: 9323442b762fd5ab9fac0cc77132087382ef76ff826ff54e0001ddc80eff3d36

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