Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8216f7b418dedb7…

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 12:23:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9a87aaa2cceceef7cfdc8f7e27157d18 SHA-1: fc7347218f958e062873570731d867e627dfbe89 SHA-256: a8216f7b418dedb7e673380e00252085f4d649f35a4a56da3d516da1ebf7bd8d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to pages offering game hacks and cheats, suggesting a lure for users to download potentially malicious software. The ML classifier also strongly indicated maliciousness. The document body and embedded links are consistent with a phishing or scam attempt to drive traffic to external sites.

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/406889139/coin-master-hack-apk-download-2021-game-hack
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-hack-no-huan-verification_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-old-rb-world-roblox_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-printables_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/mod-menu-in-roblox-hack_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/oprewards-free-robux_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-intros_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-elemental-battlegrounds-element-hack_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/legit-free-spins-coin-master_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/pubg-uc-buy-online-pakistan_GM1330123889.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-daily-spins-and-coins_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-com-hack_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/robux-hack-fast-and-easy_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-robux-on-computer_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/hack-day-roblox_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/get-everybodys-money-hack-roblox-adopt-me_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/robux-hack-2021-no-survey-or-human-verification-no-downloads_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/trade-hangout-roblox-ask-robux-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003217.bin
d81d438f46ebaa3b07ca31f75d4fee2619073c7650f83be90ff3e0f9c68e952f
pdf-font-stream PDF embedded font (sfnt) at offset 0x3217 22944 bytes
font_01_sfnt_off0000658b.bin
74154339b294d6feca0152a4072c83326c1fc7d9ddb702fdec28eb90277bbd47
pdf-font-stream PDF embedded font (sfnt) at offset 0x658B 19160 bytes