Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3f434df8d58c1a7…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 06:42:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2f6b42fb342d64eb12304efb547427f6 SHA-1: 5ff5d154fe9d9f9bc885a9e78ea801f20413fec6 SHA-256: c3f434df8d58c1a70c6c7b75ae636d942a8e23ed0ad33aaf4942f8037560ae1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising game hacks and free spins for Coin Master. The heuristic firings confirm these links point to known malicious redirectors and lure users with game-related content. While no scripts were extracted, the embedded links and document structure strongly suggest a phishing or scam attempt designed to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/406889139/coin-master-free-spin-and-trading-game-hack In PDF document text
    • https://www.zagorjeadventureteam.hr/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/are-pubg-uc-available_GM1330123889.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-piano-hack_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ffe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FFE 28912 bytes
SHA-256: eb7cceb6a4636753b965c773bd99bf725e31649de97f58fdaa905e6ab2589d5b
font_01_sfnt_off0000919b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x919B 18348 bytes
SHA-256: 22e6c3ecb65a1ae4100f8f2492b61bf61bac3fc18b142fa4adf7d6a87386ed53

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