Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb513c927f1bdac2…

MALICIOUS

PDF

82.0 KB Created: 2020-12-24 20:00:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f6164068d676883c16f3ea623fe8627d SHA-1: ddf0f4f9823a93f31358c48c8f8dfcd818092f72 SHA-256: cb513c927f1bdac2fd6c28fdba2b973e2ce4ba0873df331e991b18f2ceada4cf
96 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 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 0.9997

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://trafftec.ru/strik?utm_term=homemade+raspberry+jam+healthy PDF link annotation
    • https://cdn.sqhk.co/bolomekurufe/0jbCBii/street_fighter_4_ce_apk_full_unlocked.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/3jigjXR/splashlearn_math_facts.pdfIn PDF document text
    • https://cdn.sqhk.co/nosuterib/ScioXQx/96421098393.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426409/normal_5fd369bc88317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389107/normal_5fa033098d87d.pdfIn PDF document text
    • https://cdn.sqhk.co/wotezowedo/heJhjgU/cramped_definition_and_pronunciation.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/fasanag/teresixonibinimo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9002aa57-5cd4-41d5-b330-62c093b2c6f4/55885632806.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/gazegova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/472268bb-2f87-4f5b-b2f9-b6a9835499fb/sony_mhc-ec69i_protect_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/rubber_sheet_manufacturer_new_delhi_delhi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFB 5476 bytes
SHA-256: 5d9cdc7f08bba8dcf9d613383763e37420c3a6c3743c1a3ece9397c6f2a8cff0
font_01_sfnt_off00010069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10069 11220 bytes
SHA-256: 692639426d8d75291ee9f7431ba90b8ce981e22fc62ac246b0081c6a5373294d
font_02_sfnt_off00012671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12671 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848