Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1ec6871974891c…

MALICIOUS

PDF

39.4 KB Created: 2020-10-11 10:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-31
MD5: 22a4daafc03a38181ca240928aa38be1 SHA-1: 120e4e067bc2a85f34fee2a84dbdbe3725992312 SHA-256: 5a1ec6871974891c02e48575bed331ce2f8093938faaf1eb858533f98ea3c3b1
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/strik?keyword=og+mandino+scroll+4 In PDF document text
    • https://site-1039314.mozfiles.com/files/1039314/98439926388.pdfIn PDF document text
    • https://site-1037164.mozfiles.com/files/1037164/36564245153.pdfIn PDF document text
    • https://site-1042931.mozfiles.com/files/1042931/17646875171.pdfIn PDF document text
    • https://site-1043216.mozfiles.com/files/1043216/dodebob.pdfIn PDF document text
    • http://vidijatup.buonafidefoods.com/uploads/1/3/1/4/131407227/bezusu.pdfIn PDF document text
    • http://files.lookassessment.net/uploads/1/3/1/4/131406970/nujalexu.pdfIn PDF document text
    • http://files.peppahead.com/uploads/1/3/1/4/131453907/tudiferop-dikodewevelox-xedagim-kulanabasesi.pdfIn PDF document text
    • http://motix.mostlymonsterschulavista.com/uploads/1/3/1/8/131871767/479ccb0cfa07a0.pdfIn PDF document text
    • http://files.lizzieleekartgallery.com/uploads/1/3/1/4/131406442/ruzakelagisexu.pdfIn PDF document text
    • https://site-1043973.mozfiles.com/files/1043973/3776853241.pdfIn PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/3822796741.pdfIn PDF document text
    • https://site-1039235.mozfiles.com/files/1039235/45720109175.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/56698800920.pdfIn PDF document text
    • http://files.shawnaughtydesignz.com/uploads/1/3/1/3/131383383/xujikuwivisoro-budagoj.pdfIn PDF document text
    • http://noraxope.slimakengines.com/uploads/1/3/2/7/132740470/valukuriti.pdfIn PDF document text
    • http://files.womenmakingascene.com/uploads/1/3/1/8/131859042/lupad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7F 5372 bytes
SHA-256: f8b2dd647b994ab4029b0bf57f8e4b4337348ab5be7235332dedf437ac2d706f
font_01_sfnt_off00006da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA8 10448 bytes
SHA-256: b77801e72c655977c173139062998cd4e029ca05134961481c01af6abc5214d3

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