Malicious PDF — malware analysis report

Static analysis result for SHA-256 54335123996fe08c…

MALICIOUS

PDF

44.7 KB Created: 2021-05-17 21:30:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0a343d518633ab9574f753f0c2a74b89 SHA-1: 78b9d5c87b2ad47c61952a70b26a6aebeb6dcea9 SHA-256: 54335123996fe08c193239ea0a743845c838056bfa81c5e0bc3f83d8ad91f320
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves directing users to potentially harmful external sites, likely for further malware delivery or phishing. No scripts were extracted, but the embedded links are the main indicators of malicious intent.

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/free-spins-coins-coin-master-game-hack In PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/easy-points-gg_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/demon-roblox_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-official-page_GM406889139.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-cheat-engine-hack_GM406889139.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_off00004a97.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A97 24800 bytes
SHA-256: 50c78f6986166da3c9862c0cf4433dd39976f1ad73e9335d9adefac7eebafb5d
font_01_sfnt_off00008328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8328 2920 bytes
SHA-256: 03f8397bdf627aa5eb6acb233d3c5d547fa213245667a48a7f92829839117302
font_02_sfnt_off00008d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3F 17884 bytes
SHA-256: 18816d8d761583b578c9833b8849e2eeaed27ef2f16a893d2032c58e3f8148b6

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