Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade6bde102bbef19…

MALICIOUS

PDF

79.3 KB Created: 2021-03-07 22:28:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: aaa45b9d24d7df9d64223eecc739c91a SHA-1: 989526b934d4f85c1c0016657817dcdaec2ce00b SHA-256: ade6bde102bbef191da7b8c3d9495c4bd1474109d0776aa8cda779b13681dfd7
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, with the primary malicious URL being https://botokaw.ru/strik. The document body, though heavily obfuscated, appears to be a lure related to "Bella juicers" reviews, suggesting a phishing or scam attempt. The presence of multiple links to disposable hosting services further supports this assessment.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/strik?utm_term=bella+juicers+reviews PDF link annotation
    • https://paxavolufogese.weebly.com/uploads/1/3/4/6/134600391/vufoxemodigod.pdfIn PDF document text
    • https://puwawegolawibot.weebly.com/uploads/1/3/2/6/132682739/3673405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409093/normal_601fd696f41ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456393/normal_603035555ea00.pdfIn PDF document text
    • https://cdn.sqhk.co/dowamagova/hhKjJN0/60864217601.pdfIn PDF document text
    • https://rugibabolunape.weebly.com/uploads/1/3/1/4/131454120/fabogaz-kisur-zokidazaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404514/normal_600f1ff6d27d4.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/bmWgjy6/ginojo.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwutu/aaNgehh/pottery_barn_christmas_dessert_plates.pdfIn PDF document text
    • http://jagodadexujuza.iblogger.org/digital_integrated_circuits_analysis_and_design_ayers_solution_manual.pdfIn PDF document text
    • https://fuwiposodunumof.weebly.com/uploads/1/3/1/4/131438128/4854736.pdfIn PDF document text
    • https://lebotuzipum.weebly.com/uploads/1/3/4/5/134519329/tusuwob.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/9f9e6042-7320-48a4-b9da-e7ac86121c36/23040587839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15c72a91-88fb-4f47-8120-af589ef28803/microsoft_project_365_trial_download.pdfIn PDF document text
    • http://roxuriwiladubew.rf.gd/37843656191.pdfIn PDF document text
    • http://munoxefarofow.rf.gd/mabikuteputuxemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f71a8531-2725-47ae-be25-915966c33484/3073910269.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_off0000f9f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F0 5072 bytes
SHA-256: 0de6962aa8a0018ed569d4321e1f4fa1cd8491900ad6d797b7deab44616083d9
font_01_sfnt_off00010b55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B55 10480 bytes
SHA-256: e8634174ccac2432cf92a40d3dae01df1057bb327539668fa2d8edf63ae63996

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