Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d18726a54ae79b…

MALICIOUS

PDF

37.1 KB Created: 2021-07-06 06:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4fba8d862249416b57595f67d2f9b3f1 SHA-1: d86b8ae98e9a38f646af90ca7c20f047ca07aaea SHA-256: 44d18726a54ae79b6f8a65bbb91613c7709f30fa6af20e8c3d9b21df952b5937
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary lure is a link to 'download-coin-master-hack-apk-game-hack', which is hosted on a known malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading potentially harmful files by exploiting interest in popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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 http://netcdn.tw/app/406889139/download-coin-master-hack-apk-game-hack In PDF document text
    • http://thamelinn.com/userfiles/files/urbx-club-roblox-hack_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/all-free-roblox-2021-accessories_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-roblox-gift-cards-pins_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/robux-download_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/money-in-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-do-you-get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-trolling_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-the-quarry-cheats_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/can-people-hack-your-computer-through-roblox_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-hacks-gratis_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/coin-master-free-spins-iphone-2021_GM406889139.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
font_00_sfnt_off00002fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA4 22712 bytes
SHA-256: 07dce3a302f60614f992051f0f03aaeaad8a95c0da2ff048464f05f491f2abd1
font_01_sfnt_off0000628c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628C 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C71 18760 bytes
SHA-256: a9106ec8bdb2ef00eddd29af2fd5eb663302a9539c133b1226910953e26aec8b

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