Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c3f9914bb1bedd…

MALICIOUS

PDF

44.9 KB Created: 2021-05-15 12:14:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 365a18f3a1a13eb347f283ed0fc8c4fc SHA-1: d7b0b9dcdd1118beb970d3ca4750596069cb540c SHA-256: d0c3f9914bb1bedd067c3155d4492ac2adaa5c319f19a85ed3a98a2cccde8270
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector URL, identified by heuristics as malicious and associated with a "free generator / game hack" lure. The document body, though heavily obfuscated, contains references to the same redirector URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/spin-hack-for-coin-master-game-hack In PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/freerobux-co_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/robux-hack-2021_GM431946152.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_off0000495e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495E 25072 bytes
SHA-256: 4d80c9acd07aeddcce133d23c66ad74f513c2851e740c012c6099db799006bd2
font_01_sfnt_off0000838c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838C 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00008da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA6 18056 bytes
SHA-256: efb6f25b23622ff69f2be3f4d9196c6fd2e96d89fb8c2cc83df2012bf2af43d5

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