Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae142a0d3981326…

MALICIOUS

PDF

69.3 KB Created: 2021-02-26 19:25:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 7dfd051736ae1af3380d1538076bdf7d SHA-1: 45986a7f31791b2dc08704309f16f14e86ea785e SHA-256: 3ae142a0d3981326199d62bdf3ffc8d37088ff9f1ed6b4198d90a44fb270a333
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious document delivery, likely via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9569

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.
  • 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://xajibur.ru/award?keyword=my+cloud+ex2+ultra+review PDF link annotation
    • https://cdn.sqhk.co/zinoliwomi/hNoZ9CG/92314097726.pdfIn PDF document text
    • https://vanuludegevu.weebly.com/uploads/1/3/0/7/130776818/7523137646.pdfIn PDF document text
    • https://cdn.sqhk.co/xidatelo/AjiOjea/barbie_cooking_burger_shop_games.pdfIn PDF document text
    • https://cdn.sqhk.co/fesoxuleri/ZghifBP/74585189711.pdfIn PDF document text
    • https://cdn.sqhk.co/kurapobal/tijfkij/sniper_strike_shoot_killer_unlimited_money.pdfIn PDF document text
    • https://voxesisa.weebly.com/uploads/1/3/4/3/134349259/lekimogus_midaxejitij.pdfIn PDF document text
    • http://world-wildshop.com/pokemon_sinnoh_handbookjicbs.pdfIn PDF document text
    • https://cdn.sqhk.co/zilidadakole/gdifjf1/43094590903.pdfIn PDF document text
    • http://samoe-samaya.ru/pioneer_sph-da120_repairo67kj.pdfIn PDF document text
    • http://numulul.mygamesonline.org/biziwemabedexej.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/hOYghDL/kung_fu_panda_3_villain_theme.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/E3oiejd/kenavebepasesopefidowi.pdfIn PDF document text
    • https://bomupafevusoze.weebly.com/uploads/1/3/1/4/131407549/votovefosiki.pdfIn PDF document text
    • http://piguzipudoval.iblogger.org/19741981599.pdfIn PDF document text
    • http://fomijegi.mypressonline.com/is_blogging_still_profitable_in_2020.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/barnett_jackal_crossbow_hard_case.pdfIn PDF document text
    • https://zapizurur.weebly.com/uploads/1/3/4/9/134900478/pazupujomavuron.pdfIn PDF document text
    • http://repair-monokoles.ru/186898174193ns73.pdfIn PDF document text
    • http://apkweb.net/op_amp_numerical_questions_and_answers5m9du.pdfIn PDF document text
    • http://gogamezotuzapop.epizy.com/google_chrome_android_bookmarks_export.pdfIn PDF document text
    • http://poserub.rf.gd/koteregezerisuribale.pdfIn PDF document text

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