Malicious PDF — malware analysis report

Static analysis result for SHA-256 4022a2027821a433…

MALICIOUS

PDF

86.1 KB Created: 2020-11-24 08:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7575d50393f6ec86e2809aa2aedf1802 SHA-1: 1c4117950856efc52597c219e88750a4dc81dd2a SHA-256: 4022a2027821a433cabd2002dea78ad50985e559638db2514d5ceb811ad22809
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/strik?utm_term=ts+trina+porn
    • https://piwazolobaki.weebly.com/uploads/1/3/4/7/134714131/sopafazawakuje_nolumube.pdf
    • https://pafetuvuwube.weebly.com/uploads/1/3/4/3/134321561/fijijitekosorexo.pdf
    • https://cdn-cms.f-static.net/uploads/4417329/normal_5fad7bf321574.pdf
    • https://cdn-cms.f-static.net/uploads/4469847/normal_5fad2afb25566.pdf
    • https://munujagafunudo.weebly.com/uploads/1/3/0/8/130873736/neviz.pdf
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dupuvikadijuraxere.pdf
    • https://cdn-cms.f-static.net/uploads/4370778/normal_5fa93ab690493.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ceb41f68-23d1-4d4a-a0f9-384bcbe350a1/43342017208.pdf
    • https://uploads.strikinglycdn.com/files/bc826cde-5cd3-4b94-9bb9-7ee1e912f1ab/pegavubegubapej.pdf
    • https://uploads.strikinglycdn.com/files/18037216-3b2a-4a3e-b888-d0640e421d77/harvest_moon_tree_of_tranquility_rainbow_guide.pdf
    • https://uploads.strikinglycdn.com/files/79ba3b07-88b4-46b9-a295-31c4d467d0f8/puweremaravazadibowawumeb.pdf
    • https://uploads.strikinglycdn.com/files/da1e4bb1-557f-4e54-bfa9-5a5c3d0b10ef/marge_passive_def.pdf
    • https://uploads.strikinglycdn.com/files/17e7034b-3ab4-4cca-9cd4-89a230f1cff6/mubitipanewivinizusibigi.pdf
    • https://uploads.strikinglycdn.com/files/fc8cb297-3bae-4a93-b954-bf01879b2653/jagoka.pdf
    • 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_off000115cc.bin
8cc5b93ea3d6054f36949c5eff892bb3779f6684b4cea2e06613e8edbf98e9f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115CC 4732 bytes
font_01_sfnt_off000125ec.bin
a8556810a82bfc3efdabca42ae731d143c636a29d354f452648aa83c6e5937ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125EC 11440 bytes

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