Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2dd838c139052b3…

MALICIOUS

PDF

70.0 KB Created: 2021-02-11 23:40:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cc8a0c4c57828b45f692ac91e2ae373e SHA-1: 8283efd20a765a7fb4228d7aa6c3b4dc889103e4 SHA-256: e2dd838c139052b3f19e30fa3529b9b3e5661ab5c0c2d7a21f5d1bc2d74a7005
186 Risk Score

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
  • 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
  • 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://seumenha.ru/123?utm_term=double+displacement+reaction+examples PDF link annotation
    • http://hackins.site/depera6o164.pdfIn PDF document text
    • https://toxupuxuforiri.weebly.com/uploads/1/3/5/9/135966975/wegenuputokiw_foxozadizivux_deguzokobar.pdfIn PDF document text
    • http://spindlndou.space/pigotibesitifivaririgazpuqdm.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/iqrQgcG/download_video_from_facebook_to_computer.pdfIn PDF document text
    • https://ferofetilusef.weebly.com/uploads/1/3/5/3/135346026/467dbeb0b103a74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458623/normal_6020612fa49bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421614/normal_5ffd8381656d9.pdfIn PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/147b7de1543ce.pdfIn PDF document text
    • http://radanews.site/dark_raider_mod_apk_1._00fq0a.pdfIn PDF document text
    • https://jafedemigizol.weebly.com/uploads/1/3/4/5/134588438/gumijetikadulebox.pdfIn PDF document text
    • https://wojaginobaxap.weebly.com/uploads/1/3/1/8/131857211/4886430.pdfIn PDF document text
    • http://bbcua.site/bikewero4moni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_5fd9d1a6bbb69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jobavo/chep_guidelines_htn.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/rheumatoid_arthritis_guidelines_2019.pdfIn 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_off0000d24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24B 5428 bytes
SHA-256: 5243fad7b8b9e7403e6efcb8db810b5298a57461121a3c9df1b1afb288d80e47
font_01_sfnt_off0000e4a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A6 11276 bytes
SHA-256: 50b4ffde37153f874a8b59865327418253820ba2fab728ab6d0b8fb08e75ee12