Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fab643d465d056…

MALICIOUS

PDF

46.4 KB Created: 2021-06-02 06:00:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5f1a282bf39ea670941584a7bf6b4eb6 SHA-1: 6cb1b6e07e22d25f7904f932023ad5d1da42dfe5 SHA-256: f9fab643d465d056bbce832a389b55cdd594cb80b66623b0fe58ffd906dcf401
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to redirector domains, which in turn host further PDF lures related to game hacks and free items. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-fan-page-free-spins-game-hack. This indicates a multi-stage lure designed to trick users into downloading more malicious content, likely for financial gain or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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-fan-page-free-spins-game-hack In PDF document text
    • http://apostolosandreaslemesou.com/images/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/more-robux_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005030.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5030 24756 bytes
SHA-256: ca5a107a95e0625070ef158ec4a2e5021a3fb82e0fec2786a43597b6dffd000c
font_01_sfnt_off000088b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B3 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9264 18328 bytes
SHA-256: d106028e9c816c4ed38d7f9dbfb4c1b42a2571be69ef627f7b4a635c4c6a8b94

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