Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5eb035b05b10763…

MALICIOUS

PDF

61.8 KB Created: 2020-11-23 08:29:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1d5b2194c23ee0a26a0a0cd8fb844213 SHA-1: 1787bce5e8af95fe600f93754a81616240bd0a52 SHA-256: b5eb035b05b107635daf65b77199e1d4d2b1d677ecfe0b3aeaae15983d661a84
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafficel.ru', which is likely used for phishing or to download a secondary payload. The document body, though partially obfuscated, suggests a lure related to a "Sonic mania introduction manual", a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/123?utm_term=sonic+mania+introduction+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382952/normal_5f93d34d23fe6.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/36ca8292-546c-4cab-851a-f87512b5381d/orthographic_view_definition_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/zarol.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/beats_powerbeats_pro_with_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/the_american_legion_department_of_iowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8f6d594-29c8-4e01-b4b4-6ac042193060/3845481171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de24373e-c7b7-4932-8c9b-1cef6b307a1e/jezebo.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/cv_template_online_editing.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/3592578543.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/pazisa.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/mathematical_biology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b380486c-3596-4b43-80ae-2a46d5b04e69/paper_mario_bowser_jr.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_off0000b4f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4F9 5012 bytes
SHA-256: 109b89c4e03352d4774085a4b1854bd738a6f156885bcac298d524680d5513c0
font_01_sfnt_off0000c5ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5EA 10612 bytes
SHA-256: aeef031b6d6daca850640cfd5164b954b4446c8019964a7693d28a843e2db579