Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67a691c262b1896…

MALICIOUS

PDF

73.5 KB Created: 2020-12-27 10:46:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90bdd5d2849288458d7931206f5794a5 SHA-1: d05ea09027f64e429e108b7d85ab5880dfae2ff6 SHA-256: d67a691c262b1896affb2f654a9327723a351a89b90cecb8f7f3f577c05d4643
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, masquerading as a brochure for a Royal Enfield motorcycle. ClamAV and ML classifiers have identified this PDF as malicious, specifically flagging it as phishing and a trojan. The presence of an external URI and the overall detection by multiple security tools strongly indicate a phishing attempt designed to redirect users to a malicious site.

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://traffine.ru/strik?utm_term=royal+enfield+classic+500+brochure
    • https://cdn-cms.f-static.net/uploads/4448746/normal_5faf01201566f.pdf
    • https://cdn-cms.f-static.net/uploads/4375503/normal_5fd8b90db0241.pdf
    • https://cdn.sqhk.co/joduragenep/ihcibeh/29546553678.pdf
    • https://cdn-cms.f-static.net/uploads/4497095/normal_5fbb93246da22.pdf
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f873874d7801.pdf
    • https://cdn-cms.f-static.net/uploads/4485010/normal_5fe60ac549a3b.pdf
    • https://cdn.sqhk.co/dofewijoras/jjfjiju/five_ten_freerider_contact_mountain_bike_shoes.pdf
    • https://static.s123-cdn-static.com/uploads/4489255/normal_5fe5b397b47cc.pdf
    • https://cdn-cms.f-static.net/uploads/4377408/normal_5f9bd88f7f6ba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zirojopemup/kararemo.pdf
    • https://s3.amazonaws.com/senodiw/35891520112.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cafe.bin
945d5f427b09a162d5c0a1554e79e5e2d2d37cbab2bbef796456fd1c1f96b865		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFE 5624 bytes
font_01_sfnt_off0000de27.bin
482467e3dbcba4d467b431f050a5912241f82508df6403b63dad92dbd8dea7b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE27 10652 bytes
font_02_sfnt_off000102d2.bin
c90356f1b0c844d38a446c0d37f296145f7ba9856696c2d623aa32fceb1e6b99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102D2 16304 bytes

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