Malicious PDF — malware analysis report

Static analysis result for SHA-256 6915e2f28ab28e1e…

MALICIOUS

PDF

36.7 KB Created: 2021-05-13 10:00:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 96187fa95e42241e2ee0b8135a4f7ee4 SHA-1: 2f5e411d53d5a33756b8b471cc1f3bed992aa9b1 SHA-256: 6915e2f28ab28e1e847c5cb12a4986906a4de60b245d2a48453cdb65f8b1dd3a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a known malicious domain, masquerading as a game hack generator. The document body and heuristics indicate a lure designed to entice users to click these links, likely leading to further malicious activity or unwanted content. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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 https://netcdn.xyz/app/406889139/unlimited-coin-master-free-spins-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
stream_003_off00003485.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3485 24820 bytes
SHA-256: 8bc2ddd55f4a36160989b355427f1850d2ae6d2382dd3ff7b9687016fa6cb101
font_01_sfnt_off00006d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D45 18580 bytes
SHA-256: 8174e31e86101b13b9901149211171076a60a6b50e3f7464e0ceab7d787638aa

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