Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d9c712217df0f2…

MALICIOUS

PDF

78.2 KB Created: 2021-01-10 23:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5d078e4951ce96ebf6984acd473fac2a SHA-1: 792274cc0573846101bf14327022e1a43c5ce3ee SHA-256: 26d9c712217df0f2142c172b8433e21fbf2dfaaba5664c3e726a04c79f77ff94
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, with a critical heuristic firing for ClamAV detection. It contains an embedded URL pointing to 'traffnew.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a product, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=shinco+portable+air+conditioner+exhaust+hose+kit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379384/normal_5f93fb05c2c10.pdfIn PDF document text
    • https://towuzisutodugo.weebly.com/uploads/1/3/0/9/130969847/motoraz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488817/normal_5fcb69dfa6fe9.pdfIn PDF document text
    • https://sonuboguf.weebly.com/uploads/1/3/4/3/134310015/safejilarox_joxejo_falabu_jupeponakus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489722/normal_5fae81105c565.pdfIn PDF document text
    • https://zulufiki.weebly.com/uploads/1/3/4/6/134662959/joxazukalavel-maxukaxapenob-kuweraj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486035/normal_5fbe863f7cb7c.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/ggEhhaz/51534646960.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501198/normal_5fdefc4be919b.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
    • https://s3.amazonaws.com/gotitibekovi/53302389268.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/tosakuredorifogufetesodu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BC 5420 bytes
SHA-256: 4a4b9401a38ba7a35ab7af7d75f14eff63062054adde677b2941d55fad45ccd6
font_01_sfnt_off0000f904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF904 10744 bytes
SHA-256: f8c40cdb079e8db6daa2c260a3220ab12d1ab2e07e2290044f470773fb4d6634
font_02_sfnt_off00011d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D8B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e