Malicious PDF — malware analysis report

Static analysis result for SHA-256 242825cb9b970c60…

MALICIOUS

PDF

66.8 KB Created: 2021-02-28 00:27:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7616113939e53c6a8a41285afcc6cb09 SHA-1: 5e29ec885f8a3f852ccc2ec5ae631fc5b5d5d12f SHA-256: 242825cb9b970c60041b885bf8bf8efd0db9b19b796f777d95750965de3f6bdb
184 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards malicious content designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8307

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://ponafet.ru/award?keyword=journey+to+the+west+movie+in+hindi+watch+online PDF link annotation
    • https://ruxiwinovisas.weebly.com/uploads/1/3/5/3/135313790/3d88cf641414a.pdfIn PDF document text
    • https://marotebage.weebly.com/uploads/1/3/4/7/134712984/givovetaverut.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/lYMjb94/93890659530.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/zjf4fRA/minecraft_superhero_tycoon_download.pdfIn PDF document text
    • https://fiselowozol.weebly.com/uploads/1/3/4/3/134366189/buwugusamo.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/ieiaIje/banggood_easy_online_shopping_app_download.pdfIn PDF document text
    • http://goodsun.space/aprende_a_dibujar_con_el_lado_derecho_del_cerebroho1pw.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/itphbhc/simple_one_page_business_plan_template_free.pdfIn PDF document text
    • http://particulier-societegenerale.xyz/fire_baby_adventure_20196rab3.pdfIn PDF document text
    • https://rimekadosa.weebly.com/uploads/1/3/4/4/134467829/voxidavuzupi.pdfIn PDF document text
    • http://vugadabupujexax.22web.org/kevitobunekebefekalope.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://votitagupen.epizy.com/cessna_t182t_turbo_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/94026658553.pdfIn PDF document text
    • http://mevezexagugon.rf.gd/4248766942.pdfIn PDF document text
    • http://wekolaxoretewov.epizy.com/folanelabisavumima.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA35 5420 bytes
SHA-256: b808e8fbda2d9c55d1638f979bbaf04ab98c8c537590470d7a7b036945b781f5