Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f96e7902389939f…

MALICIOUS

PDF

75.7 KB Created: 2021-03-12 00:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0ab9fe8a75489c18abb7fb9d82d59a31 SHA-1: 7d5ebd7b0090b706d63fcc5e2f79690c87e1a1ec SHA-256: 5f96e7902389939f7e63568c51e059abe17739090176d84987faea9ba5f706f5
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/123?utm_term=monthly+budget+template+for+numbers PDF link annotation
    • https://cdn.sqhk.co/fogibadeku/Xhgjhhc/35369311025.pdfIn PDF document text
    • http://ig-copyrightnotice.com/sobre_carta_reyes_magos411s3.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/giiehhg/mini_game_entertainment_system_620_games.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/ksjEgcX/prison_break_season_1_episode_4_online.pdfIn PDF document text
    • https://cdn.sqhk.co/giwitosak/nysxpgg/9871611254.pdfIn PDF document text
    • https://cdn.sqhk.co/fagesupuwe/hdifigu/aneurisma_fusiforme_aorta_toracica.pdfIn PDF document text
    • https://cdn.sqhk.co/tavevalurov/SfQnijs/freenas_backup_to_cloud_storage.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/95566519263kxcuj.pdfIn PDF document text
    • http://all-system7.club/11997765520kwe1u.pdfIn PDF document text
    • http://helpcreditscore.info/how_to_do_hobbiesyrml8.pdfIn PDF document text
    • http://goodsun.fun/81003784125zqv1j.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/DjeBFie/mine_blast_level_3390.pdfIn PDF document text
    • http://umniashka.ru/blackberry_link_pc_softwaresg9yv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae2d719a-7c24-4750-9341-ab263ecf2b0d/71160698569.pdfIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_3efe6c0e6abc4f3bb649d1db40948f0b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9272973d-7b68-4f08-b4cc-ac5893fd2f26/6802965212.pdfIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_5f58cd462b90436ba0b0069a9442310d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b6c5d46-e0f7-406b-a036-2b6a4cfcf752/32519940117.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_off0000e808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE808 5704 bytes
SHA-256: ccf1cf3ef9962ffc7abb4d0a72142a67edde01ec6a594440525eade4909505d0
font_01_sfnt_off0000fb5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5B 11232 bytes
SHA-256: 2d470f236e04b2966c2bf648cc8ee4d42736704eec77fdfcf16259e6ba2d2877

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