Malicious PDF — malware analysis report

Static analysis result for SHA-256 bffc267993d5050d…

MALICIOUS

PDF

46.8 KB Created: 2021-09-27 10:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c75c949102e412411474002f97a0c6dc SHA-1: 169a5a98db5ff09fd278f41e07f1e97dd6fee06e SHA-256: bffc267993d5050d579fa90b40df1fa30a2be5c9548ccd24fed645b949b85f62
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external links, some pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7242

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/28393391728.pdf
    • http://firmen-bekleidung.at/userfiles/file/47109632634.pdf
    • http://floridadressyourhome.com/uploaded_files/userfiles/files/sujidokuj.pdf
    • http://fratellilongoni.com/userfiles/files/74461735243.pdf
    • http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/pebedibobodudi.pdf
    • https://xn--b8qxb801j.tw/upload/files/57609193172.pdf
    • http://canissapiens.com/images/uploads/file/77158723798.pdf
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/14581336399.pdf
    • http://resortcrimea.com/ckfinder/userfiles/files/nalajusufapifo.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/6uqbq6eeiuk7qomh53mvsebpl6/16957209313.pdf
    • https://www.mediawerf.nl/bundles/store24backoffice/ckfinder/userfiles/files/nipaxitoz.pdf
    • https://samsungklima.net/upload/ckfinder/files/8561022351.pdf
    • https://mgs-on-track.com/app/webroot/userfiles/file/jevofugafadamegopav.pdf
    • http://k-ookuma.com/js/upload/files/bawuxorafuxijeradez.pdf
    • https://uslugiinzynierskie.eu/eurostyl/photos/file/linukabosonebopowixugeruz.pdf
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1614f236c0bc38---mebabajusulesozoxavisoj.pdf
    • http://appli-veolia.net/ckfinder/userfiles/files/dutilakamexubo.pdf
    • https://ruiguoex.com/upfile/files/2021/09/19/jokipurapekonujodow.pdf
    • http://gaytonfa.com/upload/files/25399271490.pdf
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/tizazodonewe.pdf
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/161370b3bc1c68---pexuvixegedevunuvomeku.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+unlock+android+phone+without+pattern

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