Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7746400c149793…

MALICIOUS

PDF

55.7 KB Created: 2021-03-01 06:33:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7d077f1208336e7fec83919394cd7260 SHA-1: 5f4d9c315a9d0e71dad2dc9b5c71d9ec2a4df2eb SHA-256: bf7746400c149793a7d4e5c09e2da8eac3eefd758abd8591d8ba42df3ffdace5
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URIs pointing to external websites, many of which are hosted on disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains metadata related to its creation, but no direct instructions or content that would indicate a specific user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8828

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/award?keyword=schindler+how+to+live+365+days+a+year PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426410/normal_6001ffde338f0.pdfIn PDF document text
    • http://nakekizedexu.getenjoyment.net/xijixuwemifabiwa.pdfIn PDF document text
    • http://nature-ital.space/16414551747p1q7m.pdfIn PDF document text
    • https://nasabera.weebly.com/uploads/1/3/4/4/134447265/rigibemoselasuzan.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/MuWXjfw/xubovefavosutaki.pdfIn PDF document text
    • https://velalozelo.weebly.com/uploads/1/3/4/4/134498802/1029863.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390068/normal_6015ac73a2491.pdfIn PDF document text
    • http://sijubuwejipamun.mywebcommunity.org/reading_comprehension_questions_for_parents_ks2.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/jciajbq/19846166757.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/jazz_guitar_fake_book.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/lexiwukaruvagar.pdfIn PDF document text
    • https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/jitakipamimaj_fodoninasegos_vomatax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418180/normal_5feb8d12acac3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387713/normal_5fe30be626329.pdfIn PDF document text
    • http://ribadubeko.scienceontheweb.net/wovepujurukiregod.pdfIn PDF document text
    • http://infonewstravel.com/66942475207cu649.pdfIn PDF document text
    • http://raduniti.epizy.com/dusinazosodov.pdfIn PDF document text
    • http://wiwetolisitev.rf.gd/harry_potter_game_charms_class_answers.pdfIn PDF document text

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