Malicious PDF — malware analysis report

Static analysis result for SHA-256 999d8724d6635ca6…

MALICIOUS

PDF

70.5 KB Created: 2021-01-30 00:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dee0a86111eaecaa84bb73298e3ad4ce SHA-1: 34ca467b76d06871f547ded0d5bfc3b22ad26da3 SHA-256: 999d8724d6635ca61f9228849388384a36dcfc8844395c4d759593f3e092802a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/123?utm_term=pr+interval+normal PDF link annotation
    • https://bugajujifupub.weebly.com/uploads/1/3/4/8/134894919/3940981.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikewe/ijfhehc/alchemy_1000_all_combinations.pdfIn PDF document text
    • http://lamovingcompany.com/bob_proctor_you_were_born_rich_workbookmrz1n.pdfIn PDF document text
    • https://litokotivugobud.weebly.com/uploads/1/3/2/6/132695550/66c8b33d5a35d.pdfIn PDF document text
    • https://xafusotegemuwif.weebly.com/uploads/1/3/5/3/135304795/zuvavuferoxunoleram.pdfIn PDF document text
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/515dc1061202c5a.pdfIn PDF document text
    • http://organicsss.space/1648293640210jg5.pdfIn PDF document text
    • https://nutagabe.weebly.com/uploads/1/3/5/3/135325028/kekuselimo.pdfIn PDF document text
    • http://ductsunlimitedins.com/tutefelutezubiqrrgh.pdfIn PDF document text
    • http://kopolebukerone.iblogger.org/assemblage_bois.pdfIn PDF document text
    • http://wowitaly.space/bidotubokojuvituweb60372.pdfIn PDF document text
    • http://iminn.ru/46870981579b5g82.pdfIn PDF document text
    • https://lurexiji.weebly.com/uploads/1/3/4/5/134594132/patani_dajav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://karifopiti.epizy.com/14818113533.pdfIn PDF document text
    • http://viporikapopafep.epizy.com/bifixefanotajatowan.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_off0000d8a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A4 4712 bytes
SHA-256: 6d9e3f3b6f6dc8756d9da4efa320e97be3f4ff6b4072ddaf191e490d1bc873a9
font_01_sfnt_off0000e89c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89C 10892 bytes
SHA-256: 709ff2902c2c97f24a3383a32b4a5585ab84b0464f19cb0e2bbd72c962c61ba5