Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ade605b084191e…

MALICIOUS

PDF

78.3 KB Created: 2021-01-10 00:44:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: d9877dc6d75c91faf658595734733ef4 SHA-1: 7ea6c7f783f077cc46ff1ecf966af8558610b165 SHA-256: a4ade605b084191ef9b541de6f1256feb5cff3bab879997f8ef708747fda30d8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'traffnew.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect the user to this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffnew.ru/123?utm_term=battlefront+2+2005+posture+mods+not+working PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417983/normal_5fdc666897e77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fcd58a1af076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475863/normal_5fdb5ff2132c2.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/giWjeUR/sunrise_smart_tv_apk_samsung.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/b183142b0.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/exAC7hh/numagog.pdfIn PDF document text
    • https://tenanetudoji.weebly.com/uploads/1/3/4/2/134266315/8d96c9af0d8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408330/normal_5fa65edc88cba.pdfIn PDF document text
    • https://jonoxuxiwef.weebly.com/uploads/1/3/4/3/134314506/jovikozulig.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/2jjhed0/fall_guys_mobile_release.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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_off0000e742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE742 5844 bytes
SHA-256: 795e22e2ce816e1e225fd6afa131cf916004307cd8998e5f953163f370a79eae
font_01_sfnt_off0000fb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB25 10396 bytes
SHA-256: fd1b53eea801b47bf39ff08ed828b9cd67ca6f038a74d2ca64a4474c49aaa322
font_02_sfnt_off00011e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333