Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebf069b36b3f8ec…

MALICIOUS

PDF

46.0 KB Created: 2021-05-15 01:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a5db2637ae9f088f505dd55dfd2f04f2 SHA-1: 29a7af71556d9be91b0e1950743ebed9ded2f9df SHA-256: 8ebf069b36b3f8ec622e38c14d1d89b9310f198a4e5013a38fd5a71ff1495d31
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a phishing or scam attempt.

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/406889139/how-to-get-free-spins-for-coin-master-game-hack In PDF document text
    • http://nod74.ru/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://nod74.ru/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/real-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/free-coin-master-spins-no-human-verification_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_off00004a93.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A93 27380 bytes
SHA-256: 110caf6709433edc26d67aa3cb5e3785de0ce41dc900732a10b1ef336375aba7
font_01_sfnt_off00008879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8879 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off00009219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9219 18052 bytes
SHA-256: 3cfae0e628493b06a11893ba870a091d0c1d4835c1ebffdd70b8f2a1c7d637a9

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