Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cc377823a369b5…

MALICIOUS

PDF

75.6 KB Created: 2021-02-22 05:09:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 47064d9f42be7d1c8cfe15d90350fcb1 SHA-1: 56e43740945277af38a1f0030f1233a3b1c16130 SHA-256: 35cc377823a369b53ba4a21101a20387870ffdb7bdbcfcb083691a57d6214ee4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://jottigo.ru/wix?keyword=difference+between+articles+of+incorporation+and+constitution+and+bylaws PDF link annotation
    • https://cdn.sqhk.co/bomemenun/ZmDmib7/xibefazesugegelilewof.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/jehjAjc/making_slime_simulator.pdfIn PDF document text
    • https://cdn.sqhk.co/vabolepibe/jgILcZG/parirelubifivalitigarobu.pdfIn PDF document text
    • https://wodarobasuk.weebly.com/uploads/1/3/5/3/135300597/8518406.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/igdjgic/drag_racing_games_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/mjhyjeo/mobituwoba.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/hiTgcgj/guribegamupe.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/Zjjat87/play_adventure_capitalist_unblocked.pdfIn PDF document text
    • https://kekixulup.weebly.com/uploads/1/3/1/4/131407102/labenurexowane.pdfIn PDF document text
    • https://rokubupudila.weebly.com/uploads/1/3/1/8/131856034/9483350.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://warufadul.rf.gd/walowupivixemoxopapa.pdfIn PDF document text
    • http://favisosemetidid.rf.gd/62800841269.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/6th_grade_math_mixed_review_worksheets.pdfIn PDF document text
    • http://petenufafevut.rf.gd/zogodepovekugoreguriz.pdfIn PDF document text
    • http://misosemarimo.rf.gd/meditation_music_video.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_off0000ea7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7F 5480 bytes
SHA-256: 1171e7b51f5f11454f438a966cab01e4dca89b92cee760e10b0842ad9ade4e3f
font_01_sfnt_off0000fd4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4D 10376 bytes
SHA-256: a3342991086c5ac1f3419c5a24a5ef35d729b9836bf4ce0880465b7ddbfabbf8