Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ccf5eb9fc5c880c…

MALICIOUS

PDF

36.2 KB Created: 2021-05-22 05:38:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e00683f121e7dc26b04023e261613a0e SHA-1: 45822d0b1c0cefd5b9f5e6895005b535881fe122 SHA-256: 1ccf5eb9fc5c880cfbb0dbc8483baa32aa042eed21bbd5a9836cd6f63588c019
160 Risk Score

Malware Insights

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

The PDF contains multiple links to websites offering 'free Robux' or 'game hacks', which are common lures for malicious content. The heuristic PDF_GAME_HACK_REDIRECT_LURE specifically identifies the primary malicious URL. While no scripts were extracted, the document structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

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/free-robux-pastebin-game-hack In PDF document text
    • http://schmittmusic.de/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-pc-game-free-download_GM406889139.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_off0000324d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x324D 24800 bytes
SHA-256: 9f23b2d2a8898f5921526105cc335fc3e99896d4fd62daadd6d411a382c7dca9
font_01_sfnt_off00006b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B42 18620 bytes
SHA-256: 10493b23bc5ef0d73c1582ce0af85c313c8077c60a374ecda70c4edbf5cadd5c

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