Malicious PDF — malware analysis report

Static analysis result for SHA-256 fccd32dc92ffe414…

MALICIOUS

PDF

70.5 KB Created: 2021-03-02 01:09:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cec78d2244aeadd7226773868adfa645 SHA-1: 5f3e0ee4368f2b35663130e026365a014a09a888 SHA-256: fccd32dc92ffe4147cb5a9e1171004ed4f0f70028f60e5c1809f06f2e33ef79f
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://bologen.ru/award?keyword=how+to+chart+weight+loss PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465402/normal_601fd47842cd6.pdfIn PDF document text
    • https://cdn.sqhk.co/jopuromug/ibjfbIb/61364044254.pdfIn PDF document text
    • http://pozidekozavam.iblogger.org/wanegafal.pdfIn PDF document text
    • https://suwodofiwimi.weebly.com/uploads/1/3/4/4/134495338/8570c5771ef.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/jjfgjgf/college_basketball_shooting_drills.pdfIn PDF document text
    • https://nagafibujur.weebly.com/uploads/1/3/4/5/134514283/lapabojirudo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378604/normal_600dc372a041b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415937/normal_5fe7594aa726b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427274/normal_6035c5d281102.pdfIn PDF document text
    • https://cdn.sqhk.co/wovupeni/K8Djjje/hokey_pokey_dance_song.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sevezogare.rf.gd/timupewosikerusunaromezur.pdfIn PDF document text
    • http://pisumapopub.rf.gd/xoguwulolurukiludazexake.pdfIn PDF document text
    • http://dokelegusipodi.epizy.com/pibasesodewevebeter.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_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 5116 bytes
SHA-256: 8adff47e24bf3c74908876737248528e7d1c22bae159f76967b358eb5dff8e19
font_01_sfnt_off0000eb69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB69 9984 bytes
SHA-256: ce968e034a8dec1c3261db37932e682a1eaccf2e97bc5222d39805b2ac6e8d1e