Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fdc901788cfd15c…

MALICIOUS

PDF

42.0 KB Created: 2021-05-17 05:47:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2fc84eb3b0ae221c3109305889a55aa3 SHA-1: 7bc827b290763ff95aed811a123351112a5564d7 SHA-256: 4fdc901788cfd15c64518793fcfc88d1761f6414575087844e9320a6ab31fd94
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that form a link farm, all pointing to sites offering game hacks and cheats. The primary URL, https://netcdn.xyz/app/406889139/coin-master-hack-activegamer-game-hack, suggests a malicious download or exploit attempt. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-activegamer-game-hack
    • http://only1you.ru/images/spin-free-coin-master_GM406889139.pdf
    • http://only1you.ru/images/free-robux-websites-that-actually-work_GM431946152.pdf
    • http://only1you.ru/images/coin-master-free-spins-uk_GM406889139.pdf
    • http://only1you.ru/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdf
    • http://only1you.ru/images/robux-websites-2021_GM431946152.pdf
    • http://only1you.ru/images/mangocheats-com-hack-coin-master-cheat_GM406889139.pdf
    • http://only1you.ru/images/free-robux-no-verification-no-download_GM431946152.pdf
    • http://only1you.ru/images/roblox-free-robux-hack_GM431946152.pdf
    • http://only1you.ru/images/200-free-spins-coin-master_GM406889139.pdf
    • http://only1you.ru/images/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://only1you.ru/images/how-to-hack-a-minecraft-server_GM479516143.pdf
    • http://only1you.ru/images/how-to-change-roblox-name-for-free_GM431946152.pdf
    • http://only1you.ru/images/free-coin-and-spin-in-coin-master_GM406889139.pdf
    • http://only1you.ru/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdf
    • http://only1you.ru/images/minecraft-net-free_GM479516143.pdf
    • http://only1you.ru/images/roblox40com-robux_GM431946152.pdf
    • http://only1you.ru/images/coin-master-free-spins-link-download-free_GM406889139.pdf
    • http://only1you.ru/images/free-roblox-clothes-templates_GM431946152.pdf
    • http://only1you.ru/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdf
    • http://only1you.ru/images/hack-coin-master-spin-android_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ed.bin
98cc984dd1f6f1f583bf77ac97ebffe09de5086c06f81f1e380e334845595812
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48ED 24948 bytes
font_01_sfnt_off0000814c.bin
7942159ea88d166bbca90a684af9c7642873a6db171e4c543e33bc315b6ed94a
pdf-font-stream PDF embedded font (sfnt) at offset 0x814C 18376 bytes