Malicious PDF — malware analysis report

Static analysis result for SHA-256 789dc76ea5e6743c…

MALICIOUS

PDF

53.8 KB Created: 2021-04-24 17:15:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fd2855304e34d4e0fad8a52627a0cc19 SHA-1: 868dc44488e3575f284418d925cb2ec1244da1b0 SHA-256: 789dc76ea5e6743ce2ef370a5370e80cec0bc3d76cc3f9a11fb013d66b1830a6
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high number of embedded URLs pointing to various domains, many of which appear to be disposable or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9119

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://golowaki.ru/strik?utm_term=rumors+neil+simon+script PDF link annotation
    • http://dakajak.medianewsonline.com/is_there_a_4th_generation_echo_dot.pdfIn PDF document text
    • https://xemakoxen.weebly.com/uploads/1/3/4/3/134320116/pedezojiv.pdfIn PDF document text
    • https://jakineporop.weebly.com/uploads/1/3/5/3/135302356/c7a2cc86adc84.pdfIn PDF document text
    • https://nudatisuwirok.weebly.com/uploads/1/3/1/3/131384101/vurifol_jodixorirekepav.pdfIn PDF document text
    • https://bopunesarikimar.weebly.com/uploads/1/3/1/4/131453984/8878290.pdfIn PDF document text
    • http://xepuxupipe.mywebcommunity.org/jegigod.pdfIn PDF document text
    • https://suvamowifav.weebly.com/uploads/1/3/4/3/134351486/tedebolerixinuw_jabiwefa_xezop_suwinoj.pdfIn PDF document text
    • https://rojurunonujimos.weebly.com/uploads/1/3/5/3/135325454/nizexekilu.pdfIn PDF document text
    • https://zefipoxiba.weebly.com/uploads/1/3/2/6/132681281/9394a260901b6.pdfIn PDF document text
    • http://vorakumezaxof.mygamesonline.org/zetomuganubuni.pdfIn PDF document text
    • http://jenewazajasazu.getenjoyment.net/wuwab.pdfIn PDF document text
    • https://nupuwumot.weebly.com/uploads/1/3/5/3/135305030/dfde8f2b.pdfIn PDF document text
    • http://neriwor.medianewsonline.com/bezexunofoze.pdfIn PDF document text
    • http://kefijor.mygamesonline.org/athlean_x_max_size_reddit.pdfIn PDF document text
    • https://fikenetefi.weebly.com/uploads/1/3/4/7/134771518/rawevike_losekagufezevun_kibifit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06d15867-b34a-4205-83dc-36c889e0f0e4/wewazoraxadanosurupopojub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fb92bb9-9b99-4292-b7a7-9498f6ec224f/59996153645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15e32520-eb8d-4198-88ea-3db4937092e0/19466510936.pdfIn PDF document text

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