Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2bae5ad3f5e3dd…

MALICIOUS

PDF

77.4 KB Created: 2021-01-05 10:58:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa9a000ecfa60547bc140d54f1e22d7d SHA-1: 7316bf0524f8b05d11d87ead1bbc274c9ca8d08b SHA-256: 0c2bae5ad3f5e3dd0cc3a4280bbcfb4233598cde2848fa977f54a82f54e887ad
136 Risk Score

Malware Insights

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

This PDF was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier as malicious. It contains an embedded URL pointing to a suspicious domain, likely intended to host or redirect to a phishing page or further malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may also be instructing users to open a password-protected archive, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafffi.ru/123?utm_term=mapa+conceptual+ejemplos+creativos
    • https://cdn-cms.f-static.net/uploads/4377407/normal_5f912d43ab867.pdf
    • https://cdn.sqhk.co/koxopumo/zBgixge/dark_blue_wallpaper_for_laptop.pdf
    • https://cdn.sqhk.co/wibepudib/Q4gcIig/26105890252.pdf
    • https://static.s123-cdn-static.com/uploads/4446925/normal_5fcce71779636.pdf
    • https://cdn-cms.f-static.net/uploads/4493891/normal_5fba8d7fe25d2.pdf
    • https://cdn-cms.f-static.net/uploads/4384821/normal_5f8d487b2cd66.pdf
    • https://static.s123-cdn-static.com/uploads/4445114/normal_5fef35b6ecad5.pdf
    • https://cdn.sqhk.co/sozaxejiv/Zji04ge/24964013078.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/xomepixo/bdo_alchemy_money_making_guide.pdf
    • https://s3.amazonaws.com/tobobowu/biboniveguweropururudub.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e35b.bin
08156a69e12d09e45da50190366e81e1ab9b73174dda23711e9f768d0eb2d183		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE35B 5104 bytes
font_01_sfnt_off0000f49b.bin
42fcd260e1f5c1710ae4330265f2c0e383919ca7c75730e404ba3ead8a25578d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF49B 11320 bytes
font_02_sfnt_off0001194a.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1194A 4324 bytes

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