Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d41a1c8d5d32395…

MALICIOUS

PDF

48.0 KB Created: 2021-09-05 13:37:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bae67c8dfe07b76bb67be3ebe28021a9 SHA-1: a6d3f19c02fac338de09537775060b457a181ea7 SHA-256: 0d41a1c8d5d32395c34938a9f6059167ddc32f237c6b5f1d153db38d12ecd77e
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF is identified as an image-only lure, typical of phishing campaigns, with multiple heuristics indicating it's a link farm pointing to potentially compromised domains. The ClamAV detection and ML classifier further support its malicious nature. The document's structure and embedded URLs suggest it aims to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6237

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 48 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://fotossc.pl/_files/file/fulasaxaxopogax.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079dc3b50e37---nisonuk.pdf
    • https://bank-kredit.at/ckfinder/userfiles/files/pokazifokegobu.pdf
    • http://calisnt.com/uploads/files/tizumodivov.pdf
    • http://ranahytta.com/ckfinder/userfiles/files/84070862226.pdf
    • https://hssanesteban.cl/files/joluvisijedi.pdf
    • https://calmoinc.com/upload/editor/file/58936432335.pdf
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607377d44e95f---ruferiwakawesupatepiniz.pdf
    • https://allmassage.net/upload/file/20210707025337.pdf
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e3f0418a3---98100464941.pdf
    • https://adikkedua.com/contents//files/26474069474.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608b686ae9f70---63402167807.pdf
    • https://phoenixturkey.com/upload/ckfinder/files/gasodetogozidapetowodugo.pdf
    • https://ghnservizi.com/file/buzirejega.pdf
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16089f4d31df21---sunagonubitamarifiwinugos.pdf
    • https://olboihorgaszto.hu/editor_up2/jituposupo.pdf
    • http://clearspace-design.com/CKEdit/upload/files/votaf.pdf
    • http://emailreceptionist.net/userfiles/file/78803695152.pdf
    • https://fnb-concepts.com/images/uploads/files/79755176449.pdf
    • http://sztarmedia.hu/_user/file/55261761782.pdf
    • http://adveotec.com/img/file/36837910541.pdf
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee89f979f2---65385188568.pdf
    • http://dolphinkorea.com/files/files/bitapomodoka.pdf
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/78e0643d887fac517b48351a0b50bd34/mimut.pdf
    • http://ansing.nl/userfiles/file/95260345214.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075970c9bd51---gadozafimewuvesowudus.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=formative+assessment+process+pdf

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