Malicious PDF — malware analysis report

Static analysis result for SHA-256 91c1e2bd78e6603f…

MALICIOUS

PDF

43.0 KB Created: 2021-05-17 06:45:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0a10670ab62c37ebb22ede4eb6de240e SHA-1: 8f4a058ba7f317914c5913cbe9c67bb1e0e25437 SHA-256: 91c1e2bd78e6603f1085b2edf1a006409f20a0518f8044a2058f919390bc3b75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "game hacks" or "generators". The primary lure URL is https://netcdn.xyz/app/479516143/get-free-minecraft-account-game-hack, which is associated with a critical heuristic firing for malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the presence of multiple malicious links suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/get-free-minecraft-account-game-hack In PDF document text
    • http://pasqualeferorelli.it/images/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://pasqualeferorelli.it/images/how-do-you-get-free-food-in-coin-master_GM406889139.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_003_off00004ca7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CA7 25512 bytes
SHA-256: c2af80c1722144758d78f6c017f83ae1b15a33a664e33738522b76cda7856f86
font_01_sfnt_off00008718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8718 17848 bytes
SHA-256: 6ca58bbc5c252d5e4a1aca958c959d63db43c13a52b94ea2f1ea4654af3c8c31

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