Malicious PDF — malware analysis report

Static analysis result for SHA-256 f839ffed63f1da5a…

MALICIOUS

PDF

55.8 KB Created: 2021-02-25 09:34:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 29b90fc0cceb2c0506f5f09d1c76f7b4 SHA-1: d866692545b52e0964909e8a33fff9ba4ab9bb8e SHA-256: f839ffed63f1da5af94f7e1f9a4442f4c0b6802a78d266f6c35cb53aba873134
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, contains metadata suggesting it is a lure related to 'Sharp xe-a207 cash register programming'. The presence of external URIs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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 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
  • 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://maypoin.ru/award?keyword=sharp+xe-a207+cash+register+programming PDF link annotation
    • http://leyloften.online/exercise_for_articles_with_answersjquon.pdfIn PDF document text
    • https://vamububok.weebly.com/uploads/1/3/5/3/135317225/motagebalalidevezasa.pdfIn PDF document text
    • http://leopolds.space/power_max_824_oe_reviewee6ue.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwewiwudesi/jjoRQia/daxowifugivenasip.pdfIn PDF document text
    • http://xowozumevabig.66ghz.com/20909403379.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/dFGjcif/farm_frenzy_inc_mod_apk_revdl.pdfIn PDF document text
    • http://zavodtriumf.com/dragonvale_crystal_dragon_breeding_guidesk7qx.pdfIn PDF document text
    • http://yandex-delivery.cc/mimimivalojikq6bz.pdfIn PDF document text
    • http://basikoz.iblogger.org/6375847101.pdfIn PDF document text
    • https://malugula.weebly.com/uploads/1/3/2/6/132695531/norodugomaxepi.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/UMk3vw7/tozimajuwezoraga.pdfIn PDF document text
    • http://marafonsport.site/83608080157anq2w.pdfIn PDF document text
    • https://wilowukodol.weebly.com/uploads/1/3/4/8/134881933/b7994.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/ijAih4G/19068936309.pdfIn PDF document text
    • https://vivuguduwidu.weebly.com/uploads/1/3/2/6/132681484/ronef-liretosufonus.pdfIn PDF document text
    • http://wemubivoparuf.epizy.com/3541483502.pdfIn PDF document text
    • http://wutivufugisev.epizy.com/printable_flow_charts_templates.pdfIn PDF document text
    • http://kimufigekufeta.rf.gd/8931558044.pdfIn PDF document text

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