Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0395546a0d1337f…

MALICIOUS

PDF

73.1 KB Created: 2021-02-13 10:39:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 579f902d98d5c726426cadf319cc8389 SHA-1: a29e16d2365c9d1e6d3b17bf0d438f78543a2784 SHA-256: d0395546a0d1337f0cc4902674f963187f88c633c260ce876131fa76ba44af85
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing lure. The document's content and embedded URLs suggest an attempt to harvest credentials or session tokens by impersonating a service requiring multi-factor authentication or a one-time code. The presence of numerous links to disposable hosting and redirectors further supports a phishing campaign.

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/aws?utm_term=south+movie+love+story+2017 PDF link annotation
    • https://cdn.sqhk.co/mudemodox/egd3hhW/35706293526.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/gwYL5ji/addons_for_minecraft_pe_1._16.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/fP4hbb1/dunkirk_ny_dmv.pdfIn PDF document text
    • http://kvyovk.xyz/zopozetasepobuxupilikefcmxp4.pdfIn PDF document text
    • https://cdn.sqhk.co/wuladupuzo/skiad1R/84930995658.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369909/normal_5ff53ef63edcf.pdfIn PDF document text
    • http://zzzmmmmejjj.space/8606609732ngsol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372354/normal_5ff64a25bf1e4.pdfIn PDF document text
    • http://creditscorecard.info/vifaramumuvaledaftsjf.pdfIn PDF document text
    • https://cdn.sqhk.co/vomuvojovi/if4Rift/fevonalowubenatawa.pdfIn PDF document text
    • http://mbfsopg.com/kosaxepilagejalomedotuwoxkewio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489587/normal_600e0d7f61b56.pdfIn PDF document text
    • https://cdn.sqhk.co/dofewijoras/iirjdda/zokizi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410985/normal_5ff3f3d98d06c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_601e6159ebbd0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wavunot/87891749575.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/gonafepezakozobe.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/denifabesise.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/79668375630.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

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_off0000e15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15A 5384 bytes
SHA-256: b18bba9315e00c557ffb99c369b3f2855848f703bf7060bbd0c4d806e83ecd21
font_01_sfnt_off0000f397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF397 10472 bytes
SHA-256: 097e69b3e9a89afaf45715d341ac09ea6aced80edbf5977211a03d132bc8f9d5

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