Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df1af6528ed23a3…

MALICIOUS

PDF

74.6 KB Created: 2021-02-09 17:28:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f195f2dc3c7a511346eef97f538be116 SHA-1: 6aea66879892d04ac5b2084a81623cd901e414d1 SHA-256: 7df1af6528ed23a3746f9ab4975740513b25ca3cabb7627fc43b3d42653ac7da
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://seumenha.ru/aws?utm_term=life+after+mod+apk+1.+0.+137 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413238/normal_600895a3f04e1.pdfIn PDF document text
    • https://fogofude.weebly.com/uploads/1/3/4/3/134322730/deff7e6b.pdfIn PDF document text
    • https://cdn.sqhk.co/zanuvajebodu/wtgeidN/thief_king_s_dagger.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_5fe8aeeddf6c8.pdfIn PDF document text
    • https://cdn.sqhk.co/xafeperale/hjijeib/punch_club_fighting_tycoon_apk_1._36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494165/normal_5fda1e42ae3aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469847/normal_601b187766eee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446270/normal_60086c7199c5c.pdfIn PDF document text
    • https://fukuperuka.weebly.com/uploads/1/3/4/8/134883813/8044829.pdfIn PDF document text
    • https://cdn.sqhk.co/legezuseg/KIPgjhi/kelunulepaluwowoxonolu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_600a03800c742.pdfIn PDF document text
    • https://biridavevisosel.weebly.com/uploads/1/3/1/4/131406146/tinasadag.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/agh4Aja/zorumubipis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nazifaba.rf.gd/66929680733.pdfIn PDF document text
    • http://mowigefugitixa.epizy.com/18271027216.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_off0000e70a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70A 5452 bytes
SHA-256: 32d591d565e1162ada8c8330d07db847a14b23d7f63992aee29c624df4b3b904
font_01_sfnt_off0000f999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF999 10452 bytes
SHA-256: 83c1d647e7517eee709e123a67dc6783dd320c06dc2f3b58821774f5921fae3e