Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae02059c69a5aebc…

MALICIOUS

PDF

69.6 KB Created: 2020-12-24 20:05:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2f2a3b3919b9a64ef1d5bb393e927477 SHA-1: 96536d020670d2d00e85c8b2786c191950aa554c SHA-256: ae02059c69a5aebcda816432a8f5c9265313982372ea8129576ca656ca7919fd
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and ML classifiers indicated a high probability of maliciousness. It contains numerous external links, including one pointing to 'trafffi.ru', suggesting a phishing or malware distribution attempt. The presence of embedded PDF link farms further supports this, indicating an effort to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/aws?utm_term=apache+maven+3.+3.+3++for+windows PDF link annotation
    • https://gosazakinuda.weebly.com/uploads/1/3/4/8/134861856/9966833.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/zunaporam/feneludomitugimamadakarif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/083afc12-a37d-4ed6-8d5e-4f840a0ab76f/girl_frontline_equipment_production_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/32143015245.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/99971037014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67ba5c9f-8f1a-4389-bf6c-dfda540fe326/gladiator_guide_for_honor_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/the_story_of_stuff_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7dbb576-9d85-4c6f-800d-11f04bea49db/josabujasex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd58738d-40d6-4cc1-9af9-ac7555478a25/xesifemelixevam.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/janovogaferudovagezoket.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/brahmanical_patriarchy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6fa9659-eaca-4579-a03a-e44b1b168237/guitar_grimoire_chords_and_voicings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52007645-2d91-4e48-a9ba-65ff1f0da6f5/disgaea_2_item_world_guide.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_off0000cff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF1 5700 bytes
SHA-256: 61d57dd7ac8876c6a5bf73a6c355f27a7a3e6bc0b6fb0d0d6c980fc9dabf4559
font_01_sfnt_off0000e344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE344 11348 bytes
SHA-256: b6ce0a8705c6b6f2ae63575f8a33a0f20f0a30f96e1c29b413748df28b545e92

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