Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e42b06736c64c4e…

MALICIOUS

PDF

67.9 KB Created: 2020-11-18 07:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d621b55dd3955461ff8c0d2007697d41 SHA-1: 5f2c9511533ff45b56cd4f64d8a8f9ed184cb93f SHA-256: 5e42b06736c64c4e1cbb74ba5dc308548a05898b4de79a8cc64157bd0c2f111f
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one identified as a potential phishing lure related to 'Final Fantasy 7'. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites, likely for phishing or to download further payloads.

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://traffset.ru/aws?utm_term=final+fantasy+7+nintendo+switch+guide
    • https://rosojuvawava.weebly.com/uploads/1/3/4/7/134719385/8679832.pdf
    • https://cdn-cms.f-static.net/uploads/4380411/normal_5f8c09115a040.pdf
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/9448661.pdf
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5fa05783a8257.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/479a2fc0-abc5-41e7-bf0b-815e7c0c8bd3/tangerine_edward_bloor_full_movie.pdf
    • https://s3.amazonaws.com/fefurorobumi/avanti_microwave_oven_manual.pdf
    • https://uploads.strikinglycdn.com/files/23a46911-58cf-4ca1-a47e-a7559bf541cb/zekufupotumawajepunaz.pdf
    • https://s3.amazonaws.com/petubapizo/ielts_academic_writing_samples_band_9.pdf
    • https://uploads.strikinglycdn.com/files/20ec9c4f-cd7b-4883-ad04-8b7d086a42b9/wobawajusisezi.pdf
    • https://uploads.strikinglycdn.com/files/3571d112-3ab1-453a-a9c4-b48624ec46d0/76054575249.pdf
    • https://uploads.strikinglycdn.com/files/f233a231-8eff-453b-a146-6729d8efbfff/tazedepefet.pdf
    • https://uploads.strikinglycdn.com/files/42573d23-c2c3-4e75-910d-ae1fca0b33f0/peavey_6505_plus_schematic.pdf
    • https://uploads.strikinglycdn.com/files/9a8303f3-5554-4c15-93fc-db3d2ee59d75/nomenclatura_de_anhidridos_ejercicio.pdf
    • https://uploads.strikinglycdn.com/files/44ad0b2c-241f-4d46-af26-759922efdf49/xfinity_guide_search_not_working.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_off0000ccf6.bin
1853fe5e7982bff1501c0edf4fe234c31c94c99d3b27bb1720d4db365b943dbd
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF6 5416 bytes
font_01_sfnt_off0000df8d.bin
530c3ad3fff2d8f309176fc89d558b8ae151b4e23930b22698bb6d0637c021db
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8D 10488 bytes