Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0fd5a7e1c428256…

MALICIOUS

PDF

63.8 KB Created: 2021-09-11 08:29:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e0f0047c8c8bd11f9d1e805e34f921c1 SHA-1: 7303a6c1efee54fd358e2fd1f87a12c2175a5590 SHA-256: b0fd5a7e1c428256e945f492235231ce700dbb91525cdbb4f56b7aff8a037d6c
124 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning model indicated maliciousness. It contains numerous embedded URLs pointing to a link farm hosted on disposable domains, suggesting a phishing or scam attempt to redirect users to malicious content. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7797

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://izhar-energy.com/userfiles/file/21449385103.pdf In PDF document text
    • http://dep14kirov.ru/userfiles/file/newujemifezilafelekil.pdfIn PDF document text
    • http://batterseataxi.com/survey/userfiles/files/7751001750.pdfIn PDF document text
    • https://lostfoundglobal.com/userfiles/file/joluxowela.pdfIn PDF document text
    • https://festacontinua.it/public/file/vegofagigawetoge.pdfIn PDF document text
    • http://1night2day.com/ckupload/files/17840571578.pdfIn PDF document text
    • https://inprovituruguay.com/ckfinder/userfiles/files/wogefozu.pdfIn PDF document text
    • http://gryfarmerskie.pl/pliki_wyswig/files/logirefadolovezirov.pdfIn PDF document text
    • http://iweldbot.com/ckfinder/pho/files/riwiwugulevibefon.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/45222072996.pdfIn PDF document text
    • http://thaifilmind.com/UserFiles/file/84515188503.pdfIn PDF document text
    • http://www.centralperdana.com/file/6036765905.pdfIn PDF document text
    • http://dunakeszi.varosom.hu/userfiles/files/bikosimapidajowos.pdfIn PDF document text
    • https://okazdedziecko.pl/_files/Media/file/42980616047.pdfIn PDF document text
    • http://www.alliance-bio.com/user_data/editor/ckfinder/core/connector/php/upload/files/64350032265.pdfIn PDF document text
    • https://ooo-kenk.ru/userfiles/file/88085613413.pdfIn PDF document text
    • http://bursaceyizgelinlik.com/images_upload/files/vuzegorilulezijaxiwugasoz.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/48367000466.pdfIn PDF document text
    • http://fotografieindex.nl/images/uploads/19009864433.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/25388298241.pdfIn PDF document text
    • https://thehideawayresortpattaya.com/userfiles/files/39845967478.pdfIn PDF document text
    • http://swiss-ex.com/images/blog/file/46275836245.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///tijerumituto.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=san+andreas+money+cheat+codePDF 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_off0000d7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D9 17480 bytes
SHA-256: f877f9dce4cc063739e00386e5eac9df09bc3fa0b4073d86105c49d310354bf4

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