Malicious PDF — malware analysis report

Static analysis result for SHA-256 7636736316944e4a…

MALICIOUS

PDF

74.1 KB Created: 2020-12-25 02:50:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d56ffe5d775b5a17a48a45f38776af2c SHA-1: 19e19c09018392420bccadc00a846382069e26ae SHA-256: 7636736316944e4a16aed2bef7560469ad164c6102d48badb3547a759bedb84e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://traffset.ru/strik?utm_term=game+blood+house+escape+walkthrough PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425256/normal_5fa25c949a5a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457876/normal_5fa331ac149bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374540/normal_5f9215de9d9a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410717/normal_5fa5f055e10e4.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxefoxo/4ACiib9/assistant_director_jobs_nashville_tn.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/mojivikapeti/fekoxoduvusaf.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/onerepublic_counting_stars_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/25878025917.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/deresuvawewisasir.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_off0000e48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48C 5812 bytes
SHA-256: 38aefa76dd033e30c1728bc554e63b852a94c900ba2ae93c53064c5d6e9fbd9f
font_01_sfnt_off0000f839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF839 10720 bytes
SHA-256: bb5a2b0b41fcbe184f440dea8a4360e26ab5bbdd99cb20ee15e66f449a0e5a8e

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