Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e5132dec8cdf42…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 12:50:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 0819f4b8ce58977e94754c1737b63ae4 SHA-1: d1dc902b69f056ea51d0ead1f991c2d66ea20ea7 SHA-256: d3e5132dec8cdf42192c17278c0085b00701e5099c5d9eec394f0a073991a582
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/descargar-coin-master-hackeado-game-hack In PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/did-roblox-add-an-anti-cheat_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/hack-roba-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/tiktok-free-64-bit_GM835599320.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-roblox-and-tix_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/roblox-robux-hack-2021-december_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-robux-codes-promo-codes_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/roblox-promo-hack-code_GM431946152.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_002_off00003161.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3161 22952 bytes
SHA-256: 1cd2e361a4faaf363e88d91f053be974d77a32d3add2f4c5e075dc01bc2979be
font_01_sfnt_off000064d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D6 18344 bytes
SHA-256: 2dc59f4a639fd50dfd84ebf8da58b15f7b8793b1a3043413f9f371596774af04

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