Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68737f801f67b01…

MALICIOUS

PDF

76.2 KB Created: 2021-01-15 10:13:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 096186d9587223444c10e1d74e7e31bd SHA-1: 71e22ec92fd70304a8468b6fa472dda894362070 SHA-256: e68737f801f67b01aa7be05ccc04137debf0cc51fa5ffcc32687b7ad9c87cc16
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 phishing or trojan payload. It contains an embedded URI pointing to 'trafftec.ru', likely intended to redirect the user to a malicious site. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest the PDF is designed to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=qlab+windows+%25E3%2583%2580%25E3%2582%25A6%25E3%2583%25B3%25E3%2583%25AD%25E3%2583%25BC%25E3%2583%2589 PDF link annotation
    • https://cdn.sqhk.co/bepotedaxus/NiexBhj/2875070166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380699/normal_5f9ac7ebb7362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_5f8a6e8ac237e.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/ibJCMsE/pojewov.pdfIn PDF document text
    • https://cdn.sqhk.co/xaderimi/bpIjjgi/32300863115.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425224/normal_5fc6ce4d0182e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380882/normal_5fad5b6cbc355.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_5f905d11db27c.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/igf8fje/mewakibasamisidolur.pdfIn PDF document text
    • https://site-1176697.mozfiles.com/files/1176697/jifiwas.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/heI2jaa/oxen_free_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/varomapit/YKa83Xi/31438228142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384149/normal_5fa96a2d42c77.pdfIn PDF document text
    • https://cdn.sqhk.co/xejarirep/ghKIicH/delifukenip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDC 3884 bytes
SHA-256: 727c77cd4f4035879e80b802944e3b318c9047c9b94c7b25cd8cd45f075c26c5
font_01_sfnt_off0000ed89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED89 5016 bytes
SHA-256: b160fdc33c270d01f3545b0ac12c2e3d33c5b5c423cee7852771496a1b160925
font_02_sfnt_off0000feb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB8 10348 bytes
SHA-256: bdb2be0d40288ac6ce43bc539e25a3bc2563ebaad4d42f76d8de7cd3266a6268

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