Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e6308fb0cca734…

MALICIOUS

PDF

42.7 KB Created: 2021-09-03 18:22:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 7820b705ec7df7e8b7b0e70d7dd2663c SHA-1: cf56f2067f59bce65381a9125ed3aa012dcd208c SHA-256: a9e6308fb0cca7343b5f77c8df125f254b5398161856b50e16d30ae3c468be25
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing numerous links to external sites hosted on compromised CMS platforms. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm suggest it is designed to redirect users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7092

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 42 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://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160986056615c4---guzemiludi.pdf In PDF document text
    • http://ruresept.ru/files/file/35728063286.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/b19e376c414ff5d4b0e6c20746339769/6731050466.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/7d41fdd9e796ff1faf53ddea0845cfad/97970908945.pdfIn PDF document text
    • http://harringtonandlombardi.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/80570147445.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4f1543185---kijebogejoloxifituranu.pdfIn PDF document text
    • http://habitat3.eu/userfiles/files/kitufidatumetoziz.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a95ff24d702---96207672162.pdfIn PDF document text
    • http://tipsclubcr.com/campannas/file/rirafogimepinuzuwidite.pdfIn PDF document text
    • https://polaria.cz/images/file/tijakosizijazitomaf.pdfIn PDF document text
    • http://benthanhsgfarm.com/images/uploads/files/gumidarixikosesokufiwu.pdfIn PDF document text
    • http://niezapominajkowo.eu/userfiles/file/kudukosapofosanijiga.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//zugibenununabomut.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/3dc2d7e71b8ed4f198348cbe11ddffa4/71930267901.pdfIn PDF document text
    • https://antae.be/app/webroot/uploads/file/23014053312.pdfIn PDF document text
    • http://kirsanov-maslo.ru/uploads/wobepebozixirojekilifaw.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/55607766293.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080e4eed6c25---kutewasefufegujugomuvij.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/f4b7ddf45d2c452117bde8b542f58337/66996558527.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/93016696169.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160766aa2b5b9f---97075203643.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa37d5e742---fifuseluvitilufejex.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb4f8aba28---sijatodat.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6c788762fc---lobarufivase.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=beltronics+rx65+radar+detector+manualPDF link annotation

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