Malicious PDF — malware analysis report

Static analysis result for SHA-256 3443e26fbb5bfd9f…

MALICIOUS

PDF

84.6 KB Created: 2021-04-09 04:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bf3b7ca10dcbeb4004205aa6ba54204e SHA-1: 7dfde234e742cda6949b42417770632d4fbe9d81 SHA-256: 3443e26fbb5bfd9f304e77b6e776d1500f60277784468c25aec63b303344562d
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://baarspo.ru/strik?utm_term=does+canon+rebel+xs+shoot+video PDF link annotation
    • https://mojoranazo.weebly.com/uploads/1/3/4/4/134403481/e1863a1.pdfIn PDF document text
    • http://fametasubub.22web.org/66559687158.pdfIn PDF document text
    • https://mifepomaxa.weebly.com/uploads/1/3/4/8/134897651/7986260.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/i5iehay/4253325110.pdfIn PDF document text
    • https://menolalosixoj.weebly.com/uploads/1/3/4/7/134714047/7d4acc9.pdfIn PDF document text
    • https://vurinilobato.weebly.com/uploads/1/3/1/4/131454355/gejaw-xupag-zomisarate.pdfIn PDF document text
    • https://cdn.sqhk.co/wefekoferu/gilieii/subodupevufu.pdfIn PDF document text
    • https://tojipojewusaw.weebly.com/uploads/1/3/0/8/130814735/920519.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/diigjgd/wujisus.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/fomaralunex/bavajarekuzumogukefuw.pdfIn PDF document text
    • http://lozoxuwezuwem.epizy.com/sidawurasaf.pdfIn PDF document text
    • http://bejawuxinekaz.epizy.com/fibos.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/21352693883.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/2017_econ_dse_mc_answer.pdfIn PDF document text
    • http://tazomibege.epizy.com/exercice_algorithme_tableau_corrig.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/malaysian_ambient_air_quality_guidelines_1989.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/46754355076.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/em-_18_reader_module_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/61306334305.pdfIn PDF document text
    • http://vojuzegi.epizy.com/66537666639.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_off00010ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE9 5296 bytes
SHA-256: 642f780294bbdbebef4d34b415b6ac266796d7ecc848714d4053440cd386ce79
font_01_sfnt_off00011ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CED 11796 bytes
SHA-256: d3d469725d6fcad0feebe5e8550f7f9be56fe7bdfbca3e0973900a6c42e35703

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