Malicious PDF — malware analysis report

Static analysis result for SHA-256 165ccf155744d7b4…

MALICIOUS

PDF

43.3 KB Created: 2021-05-13 13:35:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 74c1934e235cf4615fcea0feb5b5cbe8 SHA-1: 5a29396519951d0a075312c194a1632c2a64b875 SHA-256: 165ccf155744d7b46e7c21faf692ffb9bdb1e8110d4193faa3c578cccb0bc538
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains multiple heuristics indicating malicious redirection and a lure for game hacks. The embedded URL points to a known malicious redirector, which is designed to trick users into downloading potentially harmful software. The document body, though heavily obfuscated, contains references to 'Roblox Hack Download' and a URL that aligns with the heuristic findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-hack-download-game-hack In PDF document text
    • https://schaefer-rechtsanwaelte.com/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://schaefer-rechtsanwaelte.com/images/coins-master_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_003_off00004851.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4851 25944 bytes
SHA-256: 93649d387762f6804ab688bf35798bad196875094cb2c222db311c9081e883d6
font_01_sfnt_off00008566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8566 18688 bytes
SHA-256: 777ecd9bf4cba19c66ac3b03e370a33bd01ed4cf882c145341853d771ac6f80e

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