Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab816dc925d0ec8…

MALICIOUS

PDF

58.8 KB Created: 2020-11-24 05:35:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a854592b26f51b3de6fa0162e20ed91 SHA-1: b5cef215d70902085a3f2f7fac54bbadd00eb5af SHA-256: 7ab816dc925d0ec841c8ba9b6ca02818c301a80ef118cec007f02b7833345b07
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Omega phi beta probate', potentially a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafficel.ru/strik?utm_term=omega+phi+beta+probate
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/d1b716f8e.pdf
    • https://wuvepadin.weebly.com/uploads/1/3/4/7/134714831/2392092.pdf
    • https://fowimuwejagun.weebly.com/uploads/1/3/4/5/134529075/nipubuvelum.pdf
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f894f21495ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d7130a13-1fbb-4c9c-bc44-31cd59e74459/letter_from_amazon.pdf
    • https://uploads.strikinglycdn.com/files/4981a07b-24e5-4d7c-8e23-b894ea765129/xivavozagobonuzizege.pdf
    • https://s3.amazonaws.com/vixuwogetiv/dollar_tree_handbook_and_policies.pdf
    • https://uploads.strikinglycdn.com/files/5bfd70f4-bb6d-43e4-a7d5-8ccc3879181b/52586579316.pdf
    • https://uploads.strikinglycdn.com/files/8e65b150-bf74-4d90-8a19-770523fdbc3f/36038315643.pdf
    • https://uploads.strikinglycdn.com/files/b7b6d1f1-3425-4867-9723-8ae6ae47c7a4/69748014943.pdf
    • https://uploads.strikinglycdn.com/files/645b13e3-1e1d-4a62-a5e0-c72527c6023f/59614866000.pdf
    • https://uploads.strikinglycdn.com/files/1ecfac97-e535-404d-b956-24541cdad2d3/allegiance_benefit_plan_management_payer_id.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_off0000aa82.bin
5d3ccee73c264fd5f936ffbca256ce1a75164ded608b0c29b25d676abf292395		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA82 5188 bytes
font_01_sfnt_off0000bbfa.bin
1d6e98320be2de4319c026a53b7256e5b4769a9ca4356880daa668a18f25f675		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBFA 10188 bytes

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