Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72ecd1607d03069…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 09:04:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a14b3119f3465ec1988604cd2453b038 SHA-1: 28d765108dcfc6633de1385e5a619fa01fa1e635 SHA-256: d72ecd1607d030699fe02e70d670c59417fe8d015b024bcb5aef97c2155eadad
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a document body that explicitly lures the user with promises of free in-game items for popular games like Coin Master and Roblox. The ML classifier strongly indicates maliciousness, and the presence of external URIs, including one pointing to a raw IP address, suggests these links lead to malicious sites for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/how-to-get-free-spins-on-coin-master-game-hack
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-daily-spins_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-giveaway-discord_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/www-roblox-hack-site_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-roblox-female-clothes_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-2021-link_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-without-doing-anything_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-in-roblox-june-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/gfx-maker-free-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-wheel_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/videos-de-hacks-para-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/oprewards-com-login_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-programmers_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/code-2021-robux-free-daily_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-booga-booga-mojo-fly-hack_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-get-free-bc-on-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-spin-and-win-coin-master_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-play-online-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032d7.bin
2ce0c63377fba9de2c4d4baa74ff587dd0bd9d773f430cf6a154430d914cec5b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D7 22772 bytes
font_01_sfnt_off000065fd.bin
f6486e4c00d3cdc8b5d1192946ddbf803be47e84f44f52a8e54ea271a052a700
pdf-font-stream PDF embedded font (sfnt) at offset 0x65FD 18336 bytes