Malicious PDF — malware analysis report

Static analysis result for SHA-256 acfac1f2c15b1dac…

MALICIOUS

PDF

69.2 KB Created: 2020-12-24 08:28:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d0af3c172635a902f19cac3899c3e043 SHA-1: bfc76cf6f6ff4754900197a481d67d5f9f24b6dc SHA-256: acfac1f2c15b1dacf801606f684f29fbf0ae6163dc33e41eea20c9f648d7bafa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that directs to a domain associated with malicious activity, disguised as a search result for a video game DLC. ClamAV and ML classifiers strongly indicate maliciousness, consistent with a phishing or malware distribution lure. No scripts were extracted, but the embedded URI is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/strik?utm_term=doom+eternal+dlc+ancient+gods+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f992e3ddd9bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f876638b950b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487413/normal_5fc8e95221b4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413867/normal_5fa5c50531687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377125/normal_5f9b72fd70358.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527902/normal_5fc45229943a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413005/normal_5fbe7acb8527f.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/fdkfMhf/nhl_scores_and_standings_wild_card.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408471/normal_5fcc02236f02a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f872c25ba315.pdfIn PDF document text
    • https://cdn.sqhk.co/zifakepavax/RGiq0Nh/tiny_rifles_unblocked.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/nerugiraxura/34998177701.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/injury_report_ravens.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5aecf36-eb90-4213-a18a-6cd8631b603a/transom_window_sizes_12_x_66.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/legendary_proportions_pathfinder.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_off0000cec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC4 5392 bytes
SHA-256: 2340f2cd0406967eea7e762fff60c61c91e6aa26b2c28562f5359ab7d6baea1c
font_01_sfnt_off0000e107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE107 11336 bytes
SHA-256: 3d956ac7506f4705ee16998c7e366512ca9cab0cb244c84b76e5d97c2e305c56

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