Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f7a09a28f62690…

MALICIOUS

PDF

45.7 KB Created: 2021-05-13 04:39:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 93b779cc6e29b25d98ad3e135d976b3d SHA-1: 1350ebf7d0b9f88341df1c649a539f0b1d74f7e8 SHA-256: c9f7a09a28f626904f05eb48d9ce661969d94273be244617751bdd87754fff16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games. The heuristic firings indicate these links lead to known malicious redirectors. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest a phishing or scam attempt designed to lead users to potentially malicious content or further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/406889139/coin-master-free-spins-link-today-instagram-game-hack In PDF document text
    • http://haertetechnik-steinbach.de/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/roblox-download_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://haertetechnik-steinbach.de/images/roblox-2021-hack_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F8 25396 bytes
SHA-256: 15e6ddae77a4ea9c57503d88bf06997b0c9e05814fda1fa99a10a7a1078aa749
font_01_sfnt_off000083c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C2 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off00008dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEE 18960 bytes
SHA-256: c3cae131f36bdfe9c813bd150295f39ca0ceeabf3546a2df254cc03f93d9c6e3

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