Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe2a027c09fdb6b…

MALICIOUS

PDF

57.8 KB Created: 2021-04-28 21:33:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 886e07c873494c4f6e737e86a491ea11 SHA-1: 38e387942a67b98225f33c04fcb87d1f3305a103 SHA-256: ffe2a027c09fdb6be2e40d15709cae00267bac1505ebeae54fb9295066b207a9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on compromised CMS upload directories, suggesting a lure to download a password-protected archive. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7659

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16073328942405---75548024173.pdf
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/54afd776c440e3740c2a73555aba6195/puvef.pdf
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/7193v2ljsn0lh9bl1cbu90jqv5/60322931186.pdf
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/1c739de5765ff60fab8965202128b30a/48549382809.pdf
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160883252510b5---36851625570.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/b24e4040b62fe2842c7c4ac1897ef41e/19917700133.pdf
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8d2589e76---loxak.pdf
    • http://akcjonariusz.com/UserFiles/file/litibopederodadodavujago.pdf
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607add1830d24---pujawukolulupopawojoxiz.pdf
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160867ff991fd3---95493430114.pdf
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b09725e5c7---jigaduba.pdf
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608265145d764---popaxopusalujikonem.pdf
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/e8834c49eebf511ff9f7ae63e5906ee1/zowaxadiz.pdf
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/jubafupinimuvo.pdf
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/a99d0f15a6119cd47a1ea7ee95dc89e5/31599289386.pdf
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/abc339f5fe2468cad0eaa4c49553ebb5/sofugigob.pdf
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/560d1p2jlp55eovsr6r4ufc3fg/sekopurorav.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=free+monthly+calendar+template+december+2018

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