Malicious PDF — malware analysis report

Static analysis result for SHA-256 35be2bbeb811dc08…

MALICIOUS

PDF

83.7 KB Created: 2020-12-24 20:45:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 34428688148a0ecdf34d89e8814bce12 SHA-1: 61c34450701256f71dcb23d2875601c2b53a1918 SHA-256: 35be2bbeb811dc08062c21b3e44ba666f5d5a6807397295bde841e350ab8ff17
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?utm_term=project+management+certification+austin+tx PDF link annotation
    • https://cdn.sqhk.co/jesisuvov/VgjPchb/ball_rush_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/peretudiwi/hbdgcge/block_my_ufone_number.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382780/normal_5f977746c3ea0.pdfIn PDF document text
    • https://cdn.sqhk.co/nosuterib/xg6hhgd/66151612179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375095/normal_5f8abe873c6ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421970/normal_5fd1c6693247c.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/bb4225ff-dc7b-4569-b081-7f561b0843ce/26418542575.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/ginulinuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/alan_walker_faded_roblox_piano_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51a92681-a7a8-4a3c-b754-4d9cf16f7aab/tipamisivuxenulidivimez.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/94030405941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/247e855c-f880-41e8-8980-d13ac9ecf514/falesemoridil.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/chile_fact_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/9692345607.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_off00010aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AED 5312 bytes
SHA-256: f48549fda9e950b285b32765d51b667ee5b40d81574e294b3c2d16de29292916
font_01_sfnt_off00011cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF6 10812 bytes
SHA-256: c1b12b0a0b4580954d06ca614e5eb51f578c6a388efd1b47ffbe609f3244c6d8

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