Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a1bb6200f03d67…

MALICIOUS

PDF

75.8 KB Created: 2021-05-20 11:42:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ae93715494b036b4e5482ed850f38120 SHA-1: 7cffae296a35a760cf2c29d7863d2a0f1e4f4774 SHA-256: 60a1bb6200f03d67cb0386d4639ca653103adaa6ea377940c7d0c0c08eba7db2
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, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to host a phishing page or download further malicious content. The document body, though heavily obfuscated, contains references to 'Bodoland lottery result pdf file' and 'wkhtmltopdf', suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=bodoland+lottery+result+pdf+file PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376105/normal_5fdc163b83a34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473619/normal_6007c858bc7e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403560/normal_5fdf2bc2e29b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366662/normal_5fe111a176fa1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368486/normal_5fdd74c90d88a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403283/normal_606340d22f6a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505820/normal_5ff2dcf4d9db1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379498/normal_5fc90c49dfa40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419423/normal_5fd637b3d4068.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421062/normal_6005d0a83b98b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393898/normal_5fcb2c043421f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485821/normal_5fe87685a242e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489414/normal_5fdea18896465.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fd8fb18d30f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388272/normal_605d6b2f645f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_601aab408e43f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408878/normal_5fe0cde7a2794.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502833/normal_60466fa885fb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387562/normal_602ed064699d8.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/zifilobesumafi/mewigezogigakexatav.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/30612290151.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_off0000eb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB70 5188 bytes
SHA-256: 5a600970d1ec35751213e1a99fafdb482d2fdd62c8e404bdb12676b74d9e6f1b
font_01_sfnt_off0000fd2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2F 10612 bytes
SHA-256: 3ead1ce22401258bb0674c100dac904449d44bb67e35dc54ffeb9d9612972500

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