Malicious PDF — malware analysis report

Static analysis result for SHA-256 614bce51eb4c74b2…

MALICIOUS

PDF

63.7 KB Created: 2020-12-15 06:52:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 83cc69ecf7f7793d8e8c854c7f57e704 SHA-1: bbf0bf5768df28f81f44ec12a709559ffa8ec020 SHA-256: 614bce51eb4c74b255531c6893a1187468d9ce3823871b692c039bd7706c9c9a
104 Risk Score

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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/strik?utm_term=problem+solving+strategies+arthur+engel+amazon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407060/normal_5fab92a7871b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f8723ab4e536.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505159/normal_5fc55f9c09a88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390329/normal_5fb3663937cc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460233/normal_5fb523615b965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445879/normal_5fd1ef484e501.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451575/normal_5fca39ea22dfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377674/normal_5fbf384d4581c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421217/normal_5fa7ad1b186ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408981/normal_5f9960fdd8f38.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0fa208ef7301f8b1117d5/t/5fc99e06acaba31734592c44/1607048711184/zejoxuv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd6e2c6d96458361c2338/t/5fc1a0681972c46e3cdc113b/1606525032629/exerpeutic_recumbent_bike.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_off0000bc4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4B 5352 bytes
SHA-256: f7c01ef9a3fcae5e1a70f71def7aa56558fe76c1510495a3e6fe226c3057a33c
font_01_sfnt_off0000ce60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE60 10484 bytes
SHA-256: b1a129132dcd9cb0b82276607dbc73910def69a2eb6b538f0a5623df4b8792b0