Malicious PDF — malware analysis report

Static analysis result for SHA-256 497fa9cec5c4a9bc…

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 04:01:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4efc497704545c93002aa09d05334fa6 SHA-1: 0e872fa54e404a26ce0ea09c584119a48f49ab9c SHA-256: 497fa9cec5c4a9bc77ddd13c1162671e57892a8ab126f71ce5378160e99a1388
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the lure of free in-game currency suggest a phishing or scam attempt designed to lead users to potentially harmful sites.

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/431946152/get-free-robux-gg-game-hack In PDF document text
    • http://www.aqas.it/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://www.aqas.it/images/ww-robux_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://www.aqas.it/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/rape-simulator_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/coin-hackhub-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
font_00_sfnt_off000045d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45D6 26472 bytes
SHA-256: f6d97ab3813a08e130699f53b6fff24379b7bf748b6709577024f4d586922f3a
font_01_sfnt_off000082e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E9 18404 bytes
SHA-256: a620f98cb15c08eca6701d9d96f4312c6f7f29e614ee37dc069d73b3fa28970a

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