Malicious PDF — malware analysis report

Static analysis result for SHA-256 cac80b4478b67a1c…

MALICIOUS

PDF

81.6 KB Created: 2020-12-15 21:31:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: dc9d8f6f657ed8d0c96283d9a7e0a1c2 SHA-1: 2973630cc6b16ff69df820212f8afcfccebcb4a1 SHA-256: cac80b4478b67a1c8971b90092c814706959211b289b616dd6f29b7592dff5d6
94 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, appears to contain metadata related to its creation, suggesting it was programmatically generated to facilitate the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9503

Heuristics 3

  • 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
  • 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=sony+xbr75x910c+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460042/normal_5fcd7d6df1665.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415745/normal_5fbee11e35c15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383921/normal_5faf279dbaa6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387716/normal_5fc65eb93f0fd.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/4fabcf6a-27fb-4429-a3ce-12d2bb2eb6ea/book_of_spells_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc567426b97992eb579db2d/t/5fc71a9009f4d56e8f7df390/1606883985435/pixel_survival_2_damage_hack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63131264-7344-4dab-9e7a-011249ed5a6b/saglamindir_gta_san_andreas.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/algorithm_and_flowchart_questions_with_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54a213398ff75154ad2d0/t/5fc83748e21c7c679adb79e8/1606956872137/hexagon_board_game_table.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2923b7848ba205d233c3f/t/5fca73315846d15d25f47e8f/1607103282301/center_of_gravity_chemistry_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f22da6f-ef90-4b9b-a8e1-64783ef626af/98684975053.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc659b6116eb00e3c713032/t/5fcfcc1d3166556743ac785e/1607453732725/our_solar_system_is_located_in_what_galaxy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd8c9a2-a2ac-4c11-9d0a-2614c8eeeae1/rawoferamitovurofazute.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14f89d26ff1194f767fe5/t/5fccf47705ddc9599d2341bb/1607267448188/fobokoxenibozawalawada.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12088 5732 bytes
SHA-256: 3c9cc97381b688d7ff223e7d84207bc21398ad7e50bba4fc6f2ff6d30b09ed0a