Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e8df4c5616277a…

MALICIOUS

PDF

76.2 KB Created: 2021-07-29 10:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: c0978c5d63fbb379c3c0b7b6b37bfc45 SHA-1: ca0c3fae65326e5d47b43c45c2bac35850818ef2 SHA-256: b2e8df4c5616277ad93e1e48b4e709a34c92d9a9377805a732d0e49220598997
154 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external websites hosted on potentially compromised CMS uploads or disposable domains. The presence of numerous unknown URLs suggests an attempt to distribute malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9574

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 http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160b1347165a62---35453835669.pdf In PDF document text
    • https://mimpisiluman.com/contents//files/dolelaturu.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/28592b30ca193a7a616acb87d6f0c196/23541385729.pdfIn PDF document text
    • https://livre-art.com/ckfinder/userfiles/files/rexoxafadafusefeponuk.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/27113196150.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160777a84182b8---sikifotopemusavekivij.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a7957f444---64252182085.pdfIn PDF document text
    • http://strategie-online.net/catalogue_dynamique/file/zoxepagudikag.pdfIn PDF document text
    • https://cleanenergy.mn/uploads/files/ladesumogaboged.pdfIn PDF document text
    • http://stalmost.pl/userfiles/file/71660522787.pdfIn PDF document text
    • http://domusanna.it/userfiles/files/15800843005.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/f10df789048d6f6aaea949ca83735aab/58253356696.pdfIn PDF document text
    • http://yi-xiang-yuan.com/CKEdit/upload/files/suzisibolaw.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/94474734161.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/ea8k1j9if14pkhlu63cr3idpdm/garezatezod.pdfIn PDF document text
    • http://autovoda.ru/upload/files/zoxoredevob.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160769f5233278---javavija.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/7c1d515e38eccc78d8d46f995263b117/labonaverabepatotigawure.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609d522bae576---9672483412.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609838ee8a564---27671547438.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/0a8f2d7a30d395f4a7924084e6a384df/wapesuxosirize.pdfIn PDF document text
    • http://classtool.info/upload/files/35504063055.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/cmuhg10oaeo13tboqijg0m49qc/79030118777.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16096f514614d8---86547939735.pdfIn PDF document text
    • https://rcvizovice.cz/ckfinder/userfiles/files/nibitujurug.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe71dd2ad2---lagida.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+answer+interview+questions+for+teacher+assistantPDF link annotation