Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d496c532a5263b3…

MALICIOUS

PDF

61.6 KB Created: 2020-12-22 22:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 53200e9c4c0705435515976f3515263f SHA-1: 6140679e463b1066c0bd540e3777d2ff013e3fa6 SHA-256: 0d496c532a5263b3d5f19748939ef99d10daf9debf9d547d0c2bfcc48722cc53
96 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 as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafftec.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to reference 'Amazon eagles complete greatest hits', suggesting a lure to entice users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://trafftec.ru/strik?utm_term=amazon+eagles+complete+greatest+hits PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374979/normal_5fc7519000083.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f872b4f9c79b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5fbe52df53674.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425909/normal_5fb4d89d55dd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5fbc2de9b0463.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445325/normal_5faa492b59f8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418385/normal_5fbbee143b126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464542/normal_5fb7c58ecbf65.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/5f9e6f05-26fb-42ed-bdcb-43cdee694885/nimesaromebiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0b272f1-d8c8-431e-ad86-5df29e646098/33699292715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa8924d9-93b3-42d1-bd63-4b70f9a9cc04/kidabizugevurabav.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/mixed_boundary_value_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93813e72-30e8-44c1-b317-aa7b0bcce6c4/62924431376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbd3fea9-f4e1-4c64-860f-d645a956e4e3/17833182489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dd3095f-b60f-45ed-ae1f-bde8fa4ea5e5/fesijirabelimiparu.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_off0000b42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB42F 5388 bytes
SHA-256: be370a82db04e4610797ca8dce54260099addb887bda67712d454c85e652daaf
font_01_sfnt_off0000c65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65E 10288 bytes
SHA-256: a13a07da76bd7e9822b0a2348250cf5aea649e47e81b2effddbc8520649af9f1

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