Malicious PDF — malware analysis report

Static analysis result for SHA-256 a786df9fd0a39809…

MALICIOUS

PDF

42.8 KB Created: 2021-05-15 05:43:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cc2480cc2b9458b60d1885e5eae0ae74 SHA-1: a9d0276da8f93261b5862ae7e546ac59bcda0262 SHA-256: a786df9fd0a39809a24f5fd0d9c07d69db3cbcd872cd449e0165de2bb7bfe1b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The embedded URL `https://netcdn.xyz/app/406889139/coin-master-hack-xyz-apk-download-game-hack` is directly associated with a game hack generator, suggesting the document's purpose is to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hack-xyz-apk-download-game-hack In PDF document text
    • http://samfora.de/images/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/coin-master-free-spins-2021-apk_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_off00004898.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4898 25768 bytes
SHA-256: 5781da76fef03b2def414b007cfe09ffba86d73a0e5c35f6d61e9d7a9a44391f
font_01_sfnt_off0000828b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 18964 bytes
SHA-256: 42a942681b50248dcccc5fc85bca355d05b372000a3cb49c351c6f0dce64ffde

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