Malicious PDF — malware analysis report

Static analysis result for SHA-256 74dd0e9c66893926…

MALICIOUS

PDF

68.1 KB Created: 2021-03-04 07:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2c63628e73b4d8be5385ae96eb41f784 SHA-1: e92423fd87abda268f5c7f0c56d9f7d73a347e2d SHA-256: 74dd0e9c66893926d62c8f290da70545dec2481f0d26425eea199be7fe432292
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The document body, though heavily obfuscated, contains a keyword related to "how to become a swat officer uk", suggesting a lure to entice users to click on the malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9459

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://ponafet.ru/award?keyword=how+to+become+a+swat+officer+uk PDF link annotation
    • http://lalashoppen.online/van_der_waals_a_and_b_values_for_co24vl8q.pdfIn PDF document text
    • http://titanovyi-filtr.ru/fireboy_and_watergirl_2_cool_math_games37dl4.pdfIn PDF document text
    • http://trastenmyqort.online/once_twice_thrice_game56yvq.pdfIn PDF document text
    • http://mandarin-fruit.space/barbitricos_y_benzodiacepinasd41m4.pdfIn PDF document text
    • http://nigoguno.scienceontheweb.net/harga_cartridge_printer_hp_laserjet_p1006.pdfIn PDF document text
    • http://gedatidigog.sportsontheweb.net/stephen_king_book_cover_font.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/tisafenov.pdfIn PDF document text
    • http://instapresent.site/schlage_camelot_handlesetspxd7.pdfIn PDF document text
    • http://nepoxiduvilej.scienceontheweb.net/kusumer.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/4792487866.pdfIn PDF document text
    • http://depewogidi.rf.gd/battlefield_4_ps3_guide.pdfIn PDF document text
    • http://sagisat.rf.gd/cours_sur_le_barycentre.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/butterfly_kisses_book.pdfIn PDF document text
    • http://difezazimo.rf.gd/34655316536.pdfIn PDF document text

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