Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe862dee9f467c38…

MALICIOUS

PDF

76.9 KB Created: 2021-05-19 06:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 425498d8825f7a8ea6729fb998223deb SHA-1: 3da15db1fdb3479d0db20d3959c632cba0329cb7 SHA-256: fe862dee9f467c38da104d1ce13f5d1dd7ee1f6e40e67882bb83d416aa6e3ab9
156 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent URL disguised as a search for 'rockstar games support'. This suggests a phishing attempt to trick users into clicking malicious links. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/strik?utm_term=how+do+i+contact+rockstar+games+support PDF link annotation
    • https://rakonudiboxenej.weebly.com/uploads/1/3/4/8/134874851/zatugekipemakep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487381/normal_60217e9417d39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390068/normal_5fe545f927b94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464861/normal_60222aa08b2e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462350/normal_6062b2b03a3c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374537/normal_600103abc034a.pdfIn PDF document text
    • https://vufobuvi.weebly.com/uploads/1/3/1/1/131163959/2920410.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488570/normal_5ff283421f9cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392666/normal_5fe54cd095191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403410/normal_6010d4c4abf13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421623/normal_5fdd217a0d216.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/sixolose/gixuvedafivawonixikusal.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/mebubirifevoz.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/8499478294.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/391a3004-dab9-4588-8cee-efc276b91b84/30255989864.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/javiluzavaneguvatajowado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1d7b931-3319-4dcf-b0f1-214b790cbcfb/45415604797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4be6531-0640-4fdc-9095-c8c0f4badbe8/67106108624.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/nejubawosopukuzu.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/10680465803.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/philips_voice_tracer_dvt2510_volume_control.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/dodge_challenger_2015_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/wall_street_journal_canada_customer_service.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_off0000eed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED9 5480 bytes
SHA-256: f84b15c6c2ce1e427f47256472367fe38663ea953a3d142cdae19b30346c79c7
font_01_sfnt_off00010179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10179 10700 bytes
SHA-256: ce790ccb59d2de54b149c032781df9e0542e107907c23bbd774d09bab3665339

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