Malicious PDF — malware analysis report

Static analysis result for SHA-256 26b2da4550fd8446…

MALICIOUS

PDF

35.8 KB Created: 2021-07-02 04:13:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 93f32f34e35cd7ba06789105f032416e SHA-1: 0fa8e1a42525f3190b5e47bcd778fb2a187914b3 SHA-256: 26b2da4550fd84462f91c99e724e0bb082cda57466509ed2fb542997537ebc19
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which are presented as download lures for game-related cheats and hacks. The primary URL, http://netcdn.co/app/431946152/get-robux-for-free-2021-game-hack, suggests a phishing or malware distribution attempt. The presence of a large number of external links, many with numeric slugs, indicates a potential link farm designed to attract traffic or distribute payloads.

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/get-robux-for-free-2021-game-hack
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-high-school-free-rhs-cash-no-human-verification_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-play-as-guest-free_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/how-to-make-a-roblox-group-for-free_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/ac-market-coin-master-hack_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-how-to-hack-into-anybodys-account_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/robux-websites-2021_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/earn-robux_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-free-games-guest_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/aimbot-hacks-for-roblox-arsenal_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/ways-to-get-robux_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/boku-no-roblox-hack_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-kill-aura-hack-booga-booga_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/2021-coin-master-hack-without-verification_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-3533-android-hack_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-on-iphone-6_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-hack-apk_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/free-roblox-account-generator_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/robux-and-tix-hack-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032dd.bin
d695d7174085882b8938640eef9fb1a7f674df9389c7b63e8b17679079cb2ed7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DD 22916 bytes
font_01_sfnt_off00006669.bin
c7e6ea762fc2e85d80aa6669a0bc8c0fc47ec2f37a4be0fa16c010cf46ec438a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6669 19224 bytes

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