Malicious PDF — malware analysis report

Static analysis result for SHA-256 f336176caff4d351…

MALICIOUS

PDF

42.8 KB Created: 2021-05-17 13:01:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c9b062cb3aa3d234e063f7b67e6ce1f9 SHA-1: fc13cb178ea4c65121a42f2acb4f58bbd743f5e4 SHA-256: f336176caff4d3517cafbcab6776fe14fbf49b2f1e51bdc899ab080ee5a08572
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting a 'Coin Master Hack'. The heuristic firings indicate that these links are part of a known malicious redirector chain. The document body, though partially obfuscated, reinforces the lure of game hacks and generators, aiming to trick users into clicking the malicious URLs.

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/406889139/coin-master-hack-version-2021-download-game-hack In PDF document text
    • http://precisionheavyhaul.com/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/get-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/i-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/wurst-client_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/roblox-trolling_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/how-can-u-get-free-robux_GM431946152.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_off00004984.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4984 25640 bytes
SHA-256: ddc56e1bc4196ae57c9c4d588bcfba0af200d972ccd7880afb41e91149c03f50
font_01_sfnt_off0000833c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x833C 18832 bytes
SHA-256: cd88061e10041738ec7274ba91306f286ba33e5d15dbcf077940b1575ec855e5

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