Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f598c6d11cd371e…

MALICIOUS

PDF

45.7 KB Created: 2021-05-14 18:05:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 99da13bb006e5c883cac2c900591a080 SHA-1: 7f229afb214a26c7a519c1d1e38175cee8646de1 SHA-256: 2f598c6d11cd371e83741c6225d484f2c7892ca17bf44d03350669b7dfd0afdd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including a critical one pointing to known malicious redirector infrastructure at `https://netcdn.xyz/app/406889139/coin-master-free-spins-uk-game-hack`. This lure, combined with the 'game hack' theme and the ML classifier's high confidence, indicates a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the presence of multiple embedded URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/coin-master-free-spins-uk-game-hack In PDF document text
    • https://farkas.de/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://farkas.de/images/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://farkas.de/images/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://farkas.de/images/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/minecraft-pocket-edition-free_GM479516143.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_off00004853.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4853 29856 bytes
SHA-256: 7b01df07b8cc30b5389470cd7649963fea9e0c4e77bab001327a5d96c3260e59
font_01_sfnt_off00008677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8677 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9028 18240 bytes
SHA-256: aaae38b64eb30a0fe4220b35513ba1ff9605c019ef2dc3651a924d8ad355a85d

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