Malicious PDF — malware analysis report

Static analysis result for SHA-256 2397e5b16e3fb9e5…

MALICIOUS

PDF

42.5 KB Created: 2021-05-14 12:42:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 96a82fe41be1647c4249599716514b81 SHA-1: 7fef0e6b07d74c03c3d37ced27e0fc59a312236f SHA-256: 2397e5b16e3fb9e53e21a7240d80653e904558d4fa20096c2072c0d6691ab553
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external URLs, including one identified as a malicious redirector. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates the document attempts to trick users into clicking these links by presenting them as game hacks or free generators. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt.

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-free-spins-bit-ly-game-hack In PDF document text
    • https://doingimc.com/image/data/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-spins_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-coin-master-spins-link_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b77.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B77 25080 bytes
SHA-256: cc0b24bcaf7dbb8e0dfeb1844c567a84f263651e2c030a91d07939a1c5b1fc89
font_01_sfnt_off000083a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A5 18280 bytes
SHA-256: 30193a21741cc5402413da2ce8c3dbb562d342d001498cd3d21d10b4bea75843

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