Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef6d6c2a772bb13…

MALICIOUS

PDF

35.4 KB Created: 2021-06-27 02:59:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 87ff1df732caaa3cd9adf720dc864cc5 SHA-1: d628cd79434cb013eee3b0bb65855449af58c1af SHA-256: 0ef6d6c2a772bb137bdb0c6d747031058f08f154269b221d856d6d654d6add7c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, strongly suggesting it is designed to redirect users to malicious websites. The document body and extracted URLs indicate a lure related to game hacks and in-game currency, a common tactic for phishing or malware distribution. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/if-roblox-was-not-free-part-2-game-hack
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/c-design-roblox-hack_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-to-get-free-followers-on-tiktok_GM835599320.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-tiktok-followers-without-human-verification-2021_GM835599320.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/roblox-admin-free_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/hack-in-booga-booga-roblox_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-robux-redeem-codes_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-robux-promo-codes_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-neon-blue-tie-roblox-promo-code_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-coin-master-spins-link_GM406889139.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-to-run-roblox-hacks-on-school-pc_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/roblox-hack-robux-download-2021_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-roblox-for-free-on-phone_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-minecraft-hosting_GM479516143.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-roblox-gif-card-codes_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/funny-roblox-characters-free_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdf
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-downloading-games_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003218.bin
d534c3862b5d2470e6b37ad8ed0a1784fdf074298522645d633913e89a3703f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3218 22548 bytes
font_01_sfnt_off000064bb.bin
e7b940ccef8e44197d766425be351892c32beecbb6fb2568822fe2e4be75fbd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 19232 bytes

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