Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9c7efe50ff0785…

MALICIOUS

PDF

75.9 KB Created: 2021-06-12 06:59:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 940b19f8212d0ca39ec466303c89bdec SHA-1: d0e3fe29727e351219d8d8eb71ef14c79fb3b4bc SHA-256: 7c9c7efe50ff0785d702def28c401762a7b1e527ab30a94e85b9cbaa4f10e342
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external URIs and links to disposable hosting, indicating it functions as a link farm. The primary purpose appears to be directing users to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://pixomot.ru/uplcv?utm_term=important+questions+for+class+9+maths+chapter+13
    • http://fixafilm.se/userfiles/file/wawakazoloselobopo.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bbbe748fb27---22635857895.pdf
    • https://kaptenhoki.info/contents//files/11427904220.pdf
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/db3399c6a8c255bd066fd54ae4b1f0ab/nebidonotar.pdf
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608726e8503dc---binuvefijimuvotabopepi.pdf
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/e913d064d20cf7bf9524c8780a005ce5/45322582355.pdf
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/56ec02dd01e94bc1ca4ce45a97c02999/noxawusabogavun.pdf
    • http://maternites-catholiques.org/ressource/site-image/files/figepos.pdf
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1d5bc47abc---dofutujixinamudajux.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b9791f72209---21344538269.pdf
    • http://sobsai.com/ckfinder/userfiles/files/xekix.pdf
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609255cd015c4---94396673803.pdf
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/a2943d9e6a7c15abcfb2333060252647/xupexumite.pdf
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a04a2a4ff17---11427974731.pdf
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/681c169c0b30173e6ede81276b0fb210/mugikozonekaz.pdf
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba6d5af01c---82356063846.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4ab.bin
6dbbdac8ebf2baf1b2d6c99fdd460be083da8f3c9ab7c72626cb8ed7c080d7d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AB 5688 bytes
font_01_sfnt_off0000f7e4.bin
54a9a0450576a02e27d103cc889da7f27ad41e127636cd83f523025abc9a86cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E4 12464 bytes

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