Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5f141256d74f3a…

MALICIOUS

PDF

69.9 KB Created: 2020-12-19 07:22:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fa912d51a05c97e3f16e90b57ebd8264 SHA-1: 8b74b898a642a81cf6dfbc884f86f105d5fd0c7b SHA-256: ba5f141256d74f3a5208c07aed131a293cb1f136a2669c37236435e07056e332
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a secondary payload or visiting a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'soccer training program'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/123?utm_term=individual+soccer+training+program+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382973/normal_5fbc5973428f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_5f8ffb6e40721.pdfIn PDF document text
    • https://visuzajekug.weebly.com/uploads/1/3/4/3/134305902/sabofisevinenev_mixenukim_tiwowagi_waxezo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369174/normal_5fcf2ea477b13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459630/normal_5fc4071b23c07.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/817b119ee33d48a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421944/normal_5fd2fadb2f436.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/rudelazifizuvo/wukoda.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/12479176917.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/vosabogilotakesufi.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/patazatugujo.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/clarinet_polka_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/vegipalegor.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_off0000d007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD007 5472 bytes
SHA-256: 8866261777b2f7e9148a86b487a6c68bcd0b71430a2e110c64944b95a2bdc7ea
font_01_sfnt_off0000e29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29B 11924 bytes
SHA-256: 87cb1ac8cfdc1c162a14033e8dd9e38cc0683e5740c78969c134af6e505c9943