Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f32d75e65b09fe…

MALICIOUS

PDF

36.2 KB Created: 2021-05-21 02:20:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2836acba24222e4f0b6855c55012c90a SHA-1: 9029cf0601930550d731f7c95868775d2b140061 SHA-256: 42f32d75e65b09fe3c02fcc92c86380b0e087384de57a874a9663e5291aebeef
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators. The document body explicitly mentions 'Roblox Games With Free Radio' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/roblox-games-with-free-radio-game-hack In PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/get-free-robux_GM431946152.pdfIn 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_002_off00003306.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3306 23844 bytes
SHA-256: 3482d9350869aebe7decdb6b63ff8bc3eba99b6c2201df7ecd7d13663f44665f
font_01_sfnt_off00006955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6955 19200 bytes
SHA-256: 1d90b013fd0ba072e710b1a1c7967957ed75a631fea3266b3a2ef171103bab79

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