Malicious PDF — malware analysis report

Static analysis result for SHA-256 c65b73ca227c0b66…

MALICIOUS

PDF

39.4 KB Created: 2021-06-29 03:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-24
MD5: 36dd6c1bf6aee3fcec7afb716e52752a SHA-1: 17c5c9d27c3828dcc0f5fe95f1f6254bcbf5c657 SHA-256: c65b73ca227c0b66e3762b4caf8de51fc2059053329d978b5b5e336f58f70fe9
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8684

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c852ff122d9---4668465254.pdf In PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-6-24/20210624075707716863.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/kbjo7e8lo4ua7elbjnf0fegqfg/vexafedamexeridu.pdfIn PDF document text
    • http://ilovechardonnayhills.com/userimages/33286684093.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aff80d9ff7f---bisiwasugevuwima.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/8e6t4u155t5caio7oaqc7vpne9/bitoxiligijemupokojimamo.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/g8juimmccujm9g9arsg7n21qc1/loxaw.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606e9a49998a1---95044825790.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/7f769f827cc62ee7aba99ec7bfe584ee/furotojumux.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607af649c4536---dekibisalikigujefegisilal.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/ca8e7d1de6d227aa3d66ba3208562955/fobapigibobo.pdfIn PDF document text
    • http://cbgnfinance.com/userfiles/file/60105271082.pdfIn PDF document text
    • https://allmassage.net/upload/file/20210508052839.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/jivikatapenalufid.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092284597b18---25492513679.pdfIn PDF document text
    • https://leganordavigliana.it/uploads/file/musefugokobesisexa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=online+blood+bank+project+report+pdfPDF link annotation

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