Malicious PDF — malware analysis report

Static analysis result for SHA-256 f338a80953a6add0…

MALICIOUS

PDF

49.8 KB Created: 2021-09-27 08:56:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: aa965c422c706abf4509e611ec7defc3 SHA-1: 53c5c8f3adf3d6c310986f3b1a4bad6e11a74c5d SHA-256: f338a80953a6add01414f5469aeed8d707edaa2baadb38a400c93eb52b81e51a
154 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many embedded URLs pointing to compromised CMS uploads and disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7448

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b15298b0be---13383696695.pdf In PDF document text
    • http://bc-arman.kz/ckfinder/userfiles/files/92376983781.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/t8cr2okmgs6s1lfdd25802nad7/47444760456.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/44852456679.pdfIn PDF document text
    • https://mbamantra.com/ci/userfiles/files/7207547426.pdfIn PDF document text
    • https://tapuionoticias.com/ckfinder/files/50591307178.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d36e66d0f5---59830146826.pdfIn PDF document text
    • http://sangiorgioautoservizi.com/userfiles/files/vekalebopinalizisatavu.pdfIn PDF document text
    • http://vidiniaibreketai.lt/userfiles/file/43987897263.pdfIn PDF document text
    • http://jfe.hk/userfiles/gujoxetuwuxumil.pdfIn PDF document text
    • http://goref.ru/files/file/wasidibiwovugo.pdfIn PDF document text
    • https://www.seblocation.com/ckfinder/userfiles/files/18717623188.pdfIn PDF document text
    • https://giant-nano.com/app/webroot/userfiles/files/zisibarop.pdfIn PDF document text
    • http://cmtoolsrental.com/user_img/files/xetogudapasudibakuzimu.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/161408f90225f0---21666327513.pdfIn PDF document text
    • https://alexspa.pl/userfiles/file/pomuxokejena.pdfIn PDF document text
    • http://regmac.net/userfiles/files/84267186637.pdfIn PDF document text
    • http://twtime.com/uploads/files/202109011911147333.pdfIn PDF document text
    • http://bouwbedrijfansing.nl/userfiles/file/36712731737.pdfIn PDF document text
    • http://ikkosushi.com/uploads/files/nenitobibixu.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613e4ea07fdc4---sixike.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/c9gspqmr7q500cn3bk1s8e66db/53168544237.pdfIn PDF document text
    • http://como.gattinonimondodivacanze.it/themes/userfiles/files/duwezexowage.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613115a89582c---kepir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=download+photos+from+samsung+galaxy+to+macPDF link annotation

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