Malicious PDF — malware analysis report

Static analysis result for SHA-256 24003dcd33c06eb4…

MALICIOUS

PDF

45.1 KB Created: 2021-05-14 11:56:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: d55b9960d208828f7925f4f01664f3ed SHA-1: 0ef2480e79ca43d37d6eb4f2c0fd0719654d01e0 SHA-256: 24003dcd33c06eb486d3115064a3ab6971c04ec600f5ab4b2cb75c8ba4686ac8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure related to game hacks and generators, directing users to a known malicious redirector. The embedded links and document body content strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. While no scripts were directly extracted, the PDF structure and heuristic firings indicate malicious redirection as the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/hack-coin-master-net-game-hack In PDF document text
    • http://mou16-murmansk.ru/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004874.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4874 26392 bytes
SHA-256: ffbeb1f7057da938b62b685dac36ecf1013e06ae2ee927eab9517e0ea43c7a80
font_01_sfnt_off000083e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E4 3500 bytes
SHA-256: e49a868379cd3c37e631c5a53c010e21f38d803532a2b8417aee82315d4e8634
font_02_sfnt_off00008f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F85 17716 bytes
SHA-256: 8f498102d636b4794ef3bd72728d4ff1b22607e1791f1c5c7cf16c5f235542a1

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