Malicious PDF — malware analysis report

Static analysis result for SHA-256 def12583fe0cb1c6…

MALICIOUS

PDF

73.2 KB Created: 2021-06-18 01:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e7e942bf59035ea11229ef6130fef69 SHA-1: c3ad3e62215a59d2bbfa4c27f2f98385bfe5836a SHA-256: def12583fe0cb1c6fb244f55a0969364243c74dd2ac7e373990706a822e5013d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress sites and other disposable hosting domains, suggesting an attempt to distribute malicious content or phish users. The presence of embedded URLs and the nature of the heuristics indicate a likely spearphishing attachment used to redirect victims to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://anaksemut.com/contents//files/50620420936.pdf
    • http://ilkyoukais.com/Images/Media/files/66609892881.pdf
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/1f2a035ee513838af9ac3662c3eb6ca5/bejivilatexavimujosom.pdf
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/j000374b0ueqeneeb5v5esuj1f/tazaza.pdf
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/7e149ce99df29ee01ecbd1159171ee1e/jorezawugidu.pdf
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098fcb24da8b---59471310938.pdf
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/196b730368015e6fd5bd0098db522fb9/jikatife.pdf
    • https://aprilboya.com/userfiles/file/wozuziwevolekedugi.pdf
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/7314d53090c933d683df96487a840c00/40695253991.pdf
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c45b05ef3bf---42353060980.pdf
    • https://parokisantolukas.org/Uploads/userfiles/files/begekafowizat.pdf
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/181541d83e131715fa824f87722abb36/94027872769.pdf
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b07363680e---sabuzezaneporedajo.pdf
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/14b06731970162b8932afd0c2c87bb14/fovaxikifobiluvuvumowimom.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081dd241fa5c---10187216483.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=plant+cell+lab+onion+and+elodea+answers
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d47c.bin
1d94485f02f903fedb9ce91fba6307632af6fa6ca2030a578cdc44073dfd7c5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD47C 4956 bytes
font_01_sfnt_off0000e558.bin
41f0bc806b2567ff7348d538e704e26bc5c93d7d019d43159c15196be1cac7e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE558 10800 bytes
font_02_sfnt_off000109f3.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109F3 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.