Malicious PDF — malware analysis report

Static analysis result for SHA-256 02be14e48b00748c…

MALICIOUS

PDF

73.7 KB Created: 2021-02-16 10:49:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ed1043bbf0e9e8d8f665e39766c076dc SHA-1: 770ea84b43cb7c1b585d53332b3a69abe2f1a732 SHA-256: 02be14e48b00748caf6cb13aed1549f142acf6a44a8a94691ec0eaeab74d9cd6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple external URIs, with one prominently displayed as a search result for 'python if statement list comprehension' leading to 'https://bologen.ru/wb?keyword=python%20if%20statement%20list%20comprehension'. This suggests a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/wb?keyword=python%20if%20statement%20list%20comprehension PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490369/normal_5fce2664545a6.pdfIn PDF document text
    • https://fusidaxeda.weebly.com/uploads/1/3/1/4/131453850/mumowireze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fd37a3a1e963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_600fbd0c835af.pdfIn PDF document text
    • https://rexerobebaru.weebly.com/uploads/1/3/1/8/131872155/9ee56e718b6035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452398/normal_5fda732dde7b5.pdfIn PDF document text
    • https://dexuganepo.weebly.com/uploads/1/3/1/6/131608037/aebbd4fd178.pdfIn PDF document text
    • https://dujisiseruw.weebly.com/uploads/1/3/0/7/130776106/pewemolo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sosibozipez.rf.gd/magneto_abrasive_jet_machining.pdfIn PDF document text
    • http://tekaxebabix.epizy.com/wupazetivikijavizazojazu.pdfIn PDF document text
    • http://tidefos.epizy.com/57690567560.pdfIn PDF document text
    • http://wikidupuzok.epizy.com/xisutipusifamukazono.pdfIn PDF document text
    • http://zudozam.epizy.com/obligationenrecht_sr.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_off0000e146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE146 5360 bytes
SHA-256: 074e6559b8464915a3f11a51401f6c0dfe6c7810d6e0b3079993ab50477f10db
font_01_sfnt_off0000f361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF361 11504 bytes
SHA-256: 07dcd035cf7d632363471046f4253046e3c68192c2c27420b21c88f32e0facd4

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