Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb482445a169f74…

MALICIOUS

PDF

38.0 KB Created: 2021-05-21 15:12:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ba11a731cd9d8527a546717dae440a6c SHA-1: dee98b43cb4351893c8f694b8377c15665a144ee SHA-256: 8cb482445a169f74131b9f5dcc9ae3be896de4553d398b73b33610d886276286
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors, disguised with lures for game hacks and generators. The document body explicitly mentions 'Hacks For Roblox Prison Life' and includes a 'CLICK HERE TO ACCESS ROBLOX GENERATOR' call to action, reinforcing the phishing pretext. The embedded URLs likely lead to further malicious content or exploit delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/431946152/hacks-for-roblox-prison-life-game-hack In PDF document text
    • https://ceiprevellodetoro.org/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003513.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3513 26980 bytes
SHA-256: 55a341204f6bfa3200e196aca492bee049b4d82728936652de85f04b3b3a06c3
font_01_sfnt_off000072ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AB 18620 bytes
SHA-256: e3f2ecfa212854396a9435be993bd19ffc5a7ead26ebe64f65252827dfac6040

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