Malicious PDF — malware analysis report

Static analysis result for SHA-256 af081b59eab52737…

MALICIOUS

PDF

43.4 KB Created: 2021-05-13 20:43:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ffec0da211024172dac790fcf95a8817 SHA-1: 4c96c15e0af12dcaa13d2e21ab626224f17e88d7 SHA-256: af081b59eab5273783eaa51406aad3d5cded7a8f8746828b020aad9b24a9c84e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary lure appears to be related to Coin Master and Robux, common targets for social engineering. The document's structure and embedded links suggest an attempt to trick users into visiting potentially harmful websites, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-link-game-hack In PDF document text
    • http://stpc.it/images/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://stpc.it/images/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://stpc.it/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-spin-link_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000474d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x474D 24580 bytes
SHA-256: cfda5cc1c51be467b30675f805ac4b2822570729be8c701aeba950926d6f5a2a
font_01_sfnt_off00007ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF1 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000088a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A2 17716 bytes
SHA-256: 6b6be525affa70ffc107ac4c88dd9d04ef97920621a7989faf1a85e6391895c0

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