Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b61a5d3d7280ba…

MALICIOUS

PDF

67.2 KB Created: 2020-12-14 10:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f06521b516d31d6911d6cbe756deec0e SHA-1: b137ad54aeb58425b62f2695b62cbae7f183c9ea SHA-256: 00b61a5d3d7280ba4910a77bbcf9c013a3855658ffc51e8db1f4b2ff4deaa0c0
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with one pointing to a suspicious domain ('trafffe.ru') that is likely used for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. The presence of embedded links suggests an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://trafffe.ru/strik?utm_term=oath+of+redemption+paladin PDF link annotation
    • https://bokasaveti.weebly.com/uploads/1/3/4/7/134725866/lupasetokujiziba.pdfIn PDF document text
    • https://gazelavulokar.weebly.com/uploads/1/3/4/2/134265358/e43563aa08185b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1080cde7-eaba-47ce-a4d2-3db61c4b2ab8/15574880723.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc585a93dfdd95b60f46c9e/t/5fcb45ea9708706f3998d927/1607157227250/wakosowaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/374068fc-a6d5-469b-b02b-23c3de269bc6/sizemopiraka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbfb6c98-7542-41a1-a193-3bdac56642e9/vukubozalagepo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc34a14bda9c57a97cd8cb5/t/5fc754b1b7521d608a43f8dc/1606898868096/sisters_of_battle_tabletop_tactics.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc376cddf132613bbcdefad/t/5fce58d2260a660a6b0c66ce/1607358675487/disney_princess_coloring_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d017f9a-4143-4176-a849-4dd84e7f7f19/80460870696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b640f8d-6d59-4227-94cb-266975d691a2/snells_law_practice_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcf721a9-83c2-45df-8ee8-e43b83cb0179/xajevevuduxawaboguloxefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/597c5cf3-90a0-4068-89e6-44df50fb3054/manual_de_paginas_web.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33d29405d5340f338d172/t/5fc984f5196a600d3c27dc7e/1607042294428/gartner_magic_quadrant_siem.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_off0000cc18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC18 5132 bytes
SHA-256: 973bf28ef3bd9a71899b02a8eff7d5ae0b5a6eeee79b7426362287d59f1c3799
font_01_sfnt_off0000dd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5D 9976 bytes
SHA-256: ff13e4ca02c0bcda42b020b68323c66660c1f7336a74ec9288ad5f4057526334

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