Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d67266285491a0…

MALICIOUS

PDF

67.4 KB Created: 2020-12-19 17:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3eb656fee9ccb87b9f1516231950600b SHA-1: 9311dc001421285571a6209c2d441551a0979b13 SHA-256: 26d67266285491a0752398b637af40d0dddaced1400acaa745327d605f1bcbbb
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to 'traffset.ru', which is likely part of a phishing campaign disguised as a CV or job application. The PDF structure and embedded content suggest an attempt to exploit user trust for malicious purposes.

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://traffset.ru/aws?utm_term=cv+format+marketing+executive PDF link annotation
    • https://mufiwejugoj.weebly.com/uploads/1/3/4/3/134340856/2430074.pdfIn PDF document text
    • https://lakujasoramaw.weebly.com/uploads/1/3/4/4/134400634/pijurulajulebokemeru.pdfIn PDF document text
    • https://gazumewus.weebly.com/uploads/1/3/4/9/134901575/7506244.pdfIn PDF document text
    • https://pajopujo.weebly.com/uploads/1/3/4/3/134305169/batezojudil.pdfIn PDF document text
    • https://livakazogoje.weebly.com/uploads/1/3/4/6/134622539/4427359.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/fupanabivote/55413174544.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f31de422-81aa-44e5-a2ab-511ffaa55b75/puvuvifaj.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/starch_and_iodine_diffusion_lab_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/64810098531.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/firefox_69_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/ardaas_karaan_film_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/zorobinelulubivunuxor.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/64052631090.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_off0000ccf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF7 5088 bytes
SHA-256: 51d6878db7659a6a5ccb2ac2b1e601e62c25949c831cc26957df3e6409d40023
font_01_sfnt_off0000de3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3F 10036 bytes
SHA-256: 0b51e986250dacd27a2a753e5553cdddac0265f14f552fca126e374a4a656145

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