Malicious PDF — malware analysis report

Static analysis result for SHA-256 63da8ab2935e2998…

MALICIOUS

PDF

81.5 KB Created: 2021-04-05 04:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 446af5c7df3635fd49a57f1501896a1c SHA-1: 3cf1b9cf54f5233982012e4d0ebc617e0f469537 SHA-256: 63da8ab2935e29987e429c5bfcb34e2abe175ce4bcb50853ed46fc0e711fc335
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO poisoning or phishing. One prominent URL, 'https://pelibifir.ru/wix?keyword=fellowes+dm1200ct+manual', suggests a lure related to product manuals. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/wix?keyword=fellowes+dm1200ct+manual PDF link annotation
    • http://lozejebivo.scienceontheweb.net/solidworks_piping_tutorial_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457005/normal_5feb5d7b15648.pdfIn PDF document text
    • http://torixewiser.medianewsonline.com/17672805164.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444356/normal_606a3b42554b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389797/normal_5ff2e58bae413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369646/normal_60122e34c42c1.pdfIn PDF document text
    • http://wajofima.mywebcommunity.org/66777804531.pdfIn PDF document text
    • http://xitodefigatefuj.medianewsonline.com/management_des_administrations_publiques_et_territoriales.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_60142ee7f02ae.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://s3.amazonaws.com/bolovopizonuki/33561606074.pdfIn PDF document text
    • http://vatoduk.rf.gd/palapefixutokoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/hieroglyphics_ancient_egypt_definition.pdfIn PDF document text
    • https://3c1ad7ec-bfc7-452d-a92a-0d22078d3251.filesusr.com/ugd/c6e823_a1b28585114d47058f14129b3f45dca4.pdf?index=trueIn PDF document text
    • https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_ce5615679cdd4c36a192f11a1264859c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vasofirida/69681256670.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/five_nights_at_freddys_unblocked_games_66_at_school.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/citra_emulator_for_pc_32_bit.pdfIn PDF document text
    • http://fumesowira.epizy.com/autoloader_bb_q10_sqn100-_1.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/92447242265.pdfIn PDF document text
    • http://jigosip.epizy.com/meaning_information_asymmetry.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/2385606299.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/gojikilikeza.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_off0000f13e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13E 5196 bytes
SHA-256: d600a630784500aa30a9e498fd129112f85af5c73bd042a4b1245c442cc2cf41
font_01_sfnt_off000102e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E9 11380 bytes
SHA-256: e0e1d94d4776c73d2ba080528fbcee15530207480d258cd28d223eed3fdaa602
font_02_sfnt_off00012a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1A 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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