Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7132ea424c4bc0…

MALICIOUS

PDF

46.1 KB Created: 2021-05-11 19:07:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9e61860b84b2406d4f220f570aa310be SHA-1: 8c512bcc48abcddf07c4567e345be0c0eb15807c SHA-256: db7132ea424c4bc0484bc151f0188effd95ab6a71ba6f5ca7984f9c2b406829b
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a heuristic firing for a visual download button, suggesting a lure to download a payload. The ML classifier also flagged the PDF as malicious. The document body and extracted URLs indicate a scam related to game hacks and in-game currency, likely leading to malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/earn-robux-today-earn-robux-today-game-hack In PDF document text
    • http://apx-centre.ru/images/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://apx-centre.ru/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/level-coin_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-hack-apk-35-13_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
stream_003_off000047d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D7 27504 bytes
SHA-256: 30ae8e6a9ea076ad081de1d8a9b57bff7803d2ab365b113608d1200e3beac042
font_01_sfnt_off00008784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8784 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9132 18432 bytes
SHA-256: 50fc1adeb895ae30588f73a493889120d8bf728fc3821c38df9289c33b75de2a