Malicious PDF — malware analysis report

Static analysis result for SHA-256 24450a225cdc5b1a…

MALICIOUS

PDF

28.8 KB Created: 2021-06-18 10:44:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 67c60e7b6d401fb6eba7eb929eefc3d0 SHA-1: 0f01d909529f21b957fea8ee386997f125d4ba1c SHA-256: 24450a225cdc5b1a41613bef549a7ad396a24c79a4f6286b13cbd1014a431dc6
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link that redirects to malicious infrastructure, masquerading as a game hack generator. This lure is designed to entice users into clicking the link, likely leading to further malware downloads or phishing attempts. The document body and heuristics confirm the malicious redirector and the lure's nature.

Machine Learning

  • Nyx PDF Classifier clean score 0.0337

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.co/app/431946152/floating-hack-in-roblox-star-wars-first-order-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1901 22676 bytes
SHA-256: 95cde5fee832ebacfe4c786e971dadd58f86955f14b079d8e067300c4f0e96f5
font_01_sfnt_off00004bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF5 19416 bytes
SHA-256: fa598a0d91b6d51e49835e6eeeb97942098dc7855b7f86658954ad755ae0ec24

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