Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff76d4e2de8e6dbb…

MALICIOUS

PDF

36.8 KB Created: 2021-05-10 12:30:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 74f7717b3031016f6f35548b49f94b6f SHA-1: ab2ee4c5196e4b697733a7572f6a37de411edf2b SHA-256: ff76d4e2de8e6dbbcd43716038819745e7105e3a5d8083cfc6044288d8307175
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to a malicious URL, identified as a game hack generator. This URL is also associated with Facebook credential phishing, indicating a social engineering lure. The document body and heuristics suggest a phishing attempt disguised as a free generator, aiming to steal user credentials.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/mcpe-master-unlimited-coins-free-download-game-hack.
  • 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/mcpe-master-unlimited-coins-free-download-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_off000034db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34DB 24752 bytes
SHA-256: 67dafe1eaea7ef371ccace5a745fdaae12305d8a716bcfa14e3f3afc119f9069
font_01_sfnt_off00006cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDC 18912 bytes
SHA-256: 2495d9bbdfbd41392a26722b7d1029a4e9132e22aa6e9b8d4c4744142e94adf7

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