Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8fc7c27c1192c0e…

MALICIOUS

PDF

42.4 KB Created: 2021-05-17 19:52:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 159fc24c9b7c0fa48bfd5c3a5e64cce3 SHA-1: 6b0ae7e8797cec78f154d08b7fbba0120f89a437 SHA-256: b8fc7c27c1192c0ee62b37d7884bd15066c0d5067b52ce5de1b6329146a98210
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body and extracted URLs suggest a lure related to game cheats or hacks, aiming to trick users into clicking malicious links. The presence of multiple links to external PDF files, some with numeric slugs, indicates a potential attempt to distribute further malicious content or redirect users to phishing sites.

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/how-to-get-free-cards-sets-for-coin-master-game-hack
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-stop-attack-hack_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-today_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-coins-coin-master-link_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/hack-coin-pro-coin-master_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/www-robux-com_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-mod-free-download_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/claim-free-robux-button_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-free-master_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-level-4_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/minecraft-coins-free_GM479516143.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/roblox-com-hack_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-firebird-card-free_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/does-coin-master-hack-work_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/daily-free-spins-for-coin-master_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/aimbot-exe-roblox_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b1d.bin
9bb11ce632beb5f8cccf5e04b0285e83a1005e7d449cd230dc0d6d1f8e64253d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1D 24652 bytes
font_01_sfnt_off000083f5.bin
28f75b43f9722380b966cf8b0c528ec574198c6122b1958e13c92a798be1b323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F5 18048 bytes

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