Malicious PDF — malware analysis report

Static analysis result for SHA-256 352c4a3e5dd237c3…

MALICIOUS

PDF

81.6 KB Created: 2021-06-09 18:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2cfcf73b304b75364a274a7f1dba2d0f SHA-1: 751a0ffb4e17422274858c41f24824c45f6c68af SHA-256: 352c4a3e5dd237c311068a17ace04c36867ce8b323863c6d3d75c5d877e723ea
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains text related to 'like mike full movie unblocked', likely a lure to entice clicks on the embedded malicious links.

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://wastran.ru/uplcv?utm_term=like+mike+full+movie+unblocked PDF link annotation
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b978623e5cf---juramolumenubevaboleril.pdfIn PDF document text
    • https://habibitours.net/ckfinder/userfiles/files/25496419257.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b0626f1acdb---61309616120.pdfIn PDF document text
    • https://prestinireedcorp.com/userfiles/files/gijunilonuvizavovi.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/u6brcsa9ev5k0ofm48gfal134p/57007045431.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/84b1755dc8bad3c6b7c532e77f9f1dd9/zesekanivokinoxiru.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/kd98qol04regderc7akh3m1svh/10494492151.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/72bd6c245f40716be3d420dca115ef7f/97472345366.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/3jfttsep88fibnmncgarpj8ou2/lozufirikotegupixeb.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8af361d6e6---dafize.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/16089fd11202fd---35740807570.pdfIn PDF document text
    • http://on-video.com/movies/movie_data/file/20994101270.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16082b73d4c330---vigurezigoje.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608db8feac125---talawufazinepiga.pdfIn PDF document text
    • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/e8d556075915a5b0a0b5a0ab160b808e/83793521042.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/76843ea582075e6c902ed5d57d312b76/48972776707.pdfIn PDF document text
    • http://elitvorota.ru/f/file/selepatu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10302 4888 bytes
SHA-256: 880036897f616cb68d5c71c4a20528f839ee67c804b84afbd99a11288123e57c
font_01_sfnt_off000113a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A6 11184 bytes
SHA-256: dcddeefe88a13b9be801d91ad206e2a52ece407c7b2fb76abbf0cc775383e31b