Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab101b3e0605096b…

MALICIOUS

PDF

70.3 KB Created: 2021-09-24 10:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: bca8ced65fac7b6df5b21b8f9b80cc5a SHA-1: ff6acdca88b2c853caf18707e50c52835cfe635c SHA-256: ab101b3e0605096bfc2ab039b861b3630a4ceb351f1caf82caa7967ae889c329
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ClamAV as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple disposable domains. Although no scripts were explicitly extracted, the PDF structure and the presence of numerous embedded URLs suggest an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6715

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://pc75.net/upfiles/file/1631357526.pdf In PDF document text
    • https://gjbuyerbroker.com/userfiles/file/64484382047.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16144f58a0c3eb---80854091574.pdfIn PDF document text
    • http://jindi2010.com/uploadfile/files/7685975246.pdfIn PDF document text
    • http://calisnt.com/uploads/files/kelukoxokesenaguxus.pdfIn PDF document text
    • http://harmonie-avion.fr/actualite/files/xuzemevefo.pdfIn PDF document text
    • https://www.asoriofrio.org/ckfinder/userfiles/files/67042585883.pdfIn PDF document text
    • http://alpes-de-haute-provence.proximeo.com/ckfinder/userfiles/files/26110033966.pdfIn PDF document text
    • http://www.lasallelille.com/admin/ckfinder/userfiles/files/rovuwin.pdfIn PDF document text
    • https://ra7a7p-h3ba7.com/contents/files/47943505637.pdfIn PDF document text
    • http://pmrs.ps/userfiles/file/rifitosefubegiwonorafiba.pdfIn PDF document text
    • http://envisystem.com/upload/userfile/files/43377226016.pdfIn PDF document text
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/wewemuxodanofirur.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/suk2ht6316a2kpk9ok33t0sj40/40905599473.pdfIn PDF document text
    • https://darkoyunpin.com/calisma2/files/uploads/98563835171.pdfIn PDF document text
    • http://mega.kz/media/upload/files/mifobenaniwevafisexu.pdfIn PDF document text
    • https://network-italia.com/file/52777014769.pdfIn PDF document text
    • http://lnimeina.it/userfiles/files/35260934883.pdfIn PDF document text
    • http://kaus21.com/userData/board/file/54794994374.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/zoregezibevo.pdfIn PDF document text
    • http://eubeer.vn/uploads/files/tisasupixononotu.pdfIn PDF document text
    • http://ketoanaca.com/uploads/image/files/98052604110.pdfIn PDF document text
    • http://thaoduocvn.com/userfiles/image/file/goxerawemox.pdfIn PDF document text
    • http://nikolalepojevic5.com/multimedia/file/1187682729.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=elle+woods+so+much+betterPDF 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_off0000dee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE7 18520 bytes
SHA-256: 09a359f824f6220b6bc85b3e2e8813b88d585fec5d53a5d861888cd6c7b12467

Open this report in the interactive analyzer, or submit your own file for analysis.