Malicious PDF — malware analysis report

Static analysis result for SHA-256 4835e6ff08830ffe…

MALICIOUS

PDF

72.8 KB Created: 2021-01-24 04:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 4d2aa14339aaafb1ecaa98c4d2b577f8 SHA-1: 5371339cb7104929e5762573462476025a533b2d SHA-256: 4835e6ff08830ffe608c3448eca7ab10871bba13f191304d8398c1c818305b36
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?utm_term=jcpenney+stores+closing+in+georgia PDF link annotation
    • https://cdn.sqhk.co/bulixanejad/rPriax8/kevinoles.pdfIn PDF document text
    • https://cdn.sqhk.co/tudusiki/pkhjagg/never_gone_2016_ending_explained.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/d1jhhBJ/3on3_freestyle_basketball.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453909/normal_60052d7a1006e.pdfIn PDF document text
    • https://site-1168129.mozfiles.com/files/1168129/bobbing_ninja_head_soccer_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485162/normal_5fffabd9995b9.pdfIn PDF document text
    • https://site-1174029.mozfiles.com/files/1174029/mtn_momo_agent_benefits.pdfIn PDF document text
    • https://site-1204510.mozfiles.com/files/1204510/american_heart_association_cpr_guidelines_2017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369332/normal_5fe133736e91b.pdfIn PDF document text
    • https://cdn.sqhk.co/vuritukupus/f3gcSsG/bowling_christmas_party_manchester.pdfIn PDF document text
    • https://cdn.sqhk.co/lasetipulos/dcjj1id/teacher_apple_discount.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mutunibe.rf.gd/apache_ant_for_centos_7.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/10344244756.pdfIn PDF document text
    • http://tewederukafolez.rf.gd/70049091270.pdfIn PDF document text
    • http://memaded.epizy.com/summons_on_first_amended_complaint_form.pdfIn PDF document text
    • http://lilivuxaja.rf.gd/meruvibewipameri.pdfIn PDF document text
    • http://litopuputorer.rf.gd/67500200998.pdfIn PDF document text
    • http://warunegiluj.rf.gd/kanugitugifoneduse.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_off0000dfd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD0 5192 bytes
SHA-256: 379c5b283833f279d890178af659a3585a3ceea836a063d1592fb337ad2201ab
font_01_sfnt_off0000f193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF193 10852 bytes
SHA-256: bcf341aa622b7010e4012a8f45e1a8c317b24bf408adedecf938f79e28783cd7