Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ce77041bdd4e1e…

MALICIOUS

PDF

78.1 KB Created: 2021-10-08 19:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 598e917de10904f57dd80a9344e0245f SHA-1: f1d196c41e6c961e0ec04ffa4046a34e93c04647 SHA-256: 80ce77041bdd4e1ed280b1f00eea1d9a3682fb5d16616000633ddf42fe1d48c8
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as a link farm, a common tactic for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6533

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 http://bannhuaduong.net/upload/files/18706847817.pdf In PDF document text
    • http://greatwalledmond.com/ckfinder/userfiles/files/47847666840.pdfIn PDF document text
    • http://hotel-ambassador-nice.com/upload/files/fubipab.pdfIn PDF document text
    • http://peknanevesta.sk/media/file/81301172859.pdfIn PDF document text
    • https://kp-bs.ru/upload/files/97458857778.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614505aadbd4c---51562296744.pdfIn PDF document text
    • http://cartonwrappingmachine.com/userfiles/file/zidawotosutikugifovafe.pdfIn PDF document text
    • https://agape4u.org/userfiles/file/47993613701.pdfIn PDF document text
    • https://ever.dacola.com/upload/files/lidogegirezaluguxipi.pdfIn PDF document text
    • http://abw10thstreetne.com/uploads/files/32459609553.pdfIn PDF document text
    • http://acril.ru/ufiles/files/mofowuvani.pdfIn PDF document text
    • https://pincodehub.in/userfiles/file/5166332492.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/5llmrvjf91e62mfaoi14u307c9/78209417681.pdfIn PDF document text
    • https://habibitoursegypt.com/ckfinder/userfiles/files/bonovosox.pdfIn PDF document text
    • https://shreenathtechnologies.com/userfiles/file/88193173558.pdfIn PDF document text
    • https://lean-ds.com/upload/editor/file/jipamoferabumarapaxote.pdfIn PDF document text
    • http://tamlaproject.com/userData/board/file/50176930459.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16136510c5896b---rexuzozefopozomoputokel.pdfIn PDF document text
    • http://encino.kopanramen.com/uploads/files/wewibotasa.pdfIn PDF document text
    • https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/loravozewakovelewazixa.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/lebutijafubonoluseruj.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/saxonab.pdfIn PDF document text
    • http://myappartement.de/web/editor/files/vavivoxuwenepono.pdfIn PDF document text
    • http://simp-q.ru/userfiles/file/gegubevitirujidufuroxev.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/bizadejavi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=connect+2+wireless+routersPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF703 18860 bytes
SHA-256: 9f0f33aa62e2abb726aae3d27b1d0ece4d654669572c46b76a0a205012ec1ea1

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