Malicious PDF — malware analysis report

Static analysis result for SHA-256 721903c97f3e6702…

MALICIOUS

PDF

70.6 KB Created: 2021-01-15 06:43:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 683d0a0b9c3f290a9e1346d4ea6332de SHA-1: 381604ceca2162efcd953614e0217d0eff4ef0f1 SHA-256: 721903c97f3e670280bf4391929abc590d582146844da0ac82275a5dc4c71d45
154 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 0.9571

Heuristics 4

  • 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
  • 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://trafficel.ru/wb?keyword=roku%20se%20streaming%20media%20player%20white PDF link annotation
    • https://cdn.sqhk.co/zejegure/jggihev/nikana_prime_vs_skiajati.pdfIn PDF document text
    • https://zorusijumabek.weebly.com/uploads/1/3/4/8/134851431/8314527.pdfIn PDF document text
    • https://lidawutoroliv.weebly.com/uploads/1/3/1/8/131872032/ab92fb4b.pdfIn PDF document text
    • https://bogezozoxo.weebly.com/uploads/1/3/4/4/134479702/ledogoposazubelibaki.pdfIn PDF document text
    • https://filudatobo.weebly.com/uploads/1/3/2/6/132681654/wajuvafegitu_xurobi_tigoju_sivuvazaxese.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/tipikaxe/hungry_dragon_hack_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/gopefezadubugi.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/cardinal_and_intermediate_directions_worksheet_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/a_viajar_capitulo_10_vocabulario_1_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/panasonic_cordless_iron_360.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/dagogisirivizuzudalinipa.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/vogivo.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/91834328012.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/gukawoxepuxesa.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE1 5640 bytes
SHA-256: 44f6cd9df4eb95b1774aedb1e0ce7016c8aa00152b3a658d569aefa91aa9f979

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