Malicious PDF — malware analysis report

Static analysis result for SHA-256 11fa7ea24dbb16db…

MALICIOUS

PDF

35.3 KB Created: 2021-07-09 22:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f2340fcd7728b3d920405221f795d6d6 SHA-1: 59faf06483c9c47777948e9b01a6daf64fd06258 SHA-256: 11fa7ea24dbb16dbea866ecfc5c0165b11b330df6a29cea9bc72259aa9b9cd6f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, directing users to websites offering game hacks and cheats for popular games like Roblox and Coin Master. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests a phishing or scam attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-fast-and-easy-game-hack
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/my-roblox-account-was-hacked_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-send-free-spins-on-coin-master_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/50-free-scripts-roblox_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-hack-on-roblox-in-3-simple-steps_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/do-coin-master-hacks-work_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-free-spins-hack-2021_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-card-link-coin-master_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-hair-roblox_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/is-roblox-hack-safe_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-spins-coin-master-2021-today_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/cool-free-minecraft-skins_GM479516143.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/link-for-free-coins-in-coin-master_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/vip-roblox-free_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/roblox-hackprogamers-com_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-hack-blogspot_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-spin-link-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000320e.bin
7d3ac1b68f36d8190db85b1325062b0e134d7eff302d18848224a344020d52c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x320E 22352 bytes
font_01_sfnt_off000063cb.bin
e9e0cf1ab6f783e57183aba6e7ab34e8b0edef29a09b47d1de428d0435b690df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CB 19340 bytes

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