Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b56afd80bbe4ce4…

MALICIOUS

PDF

51.7 KB Created: 2021-06-13 22:53:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3842875f0b24aa490226ef7789f8a5f2 SHA-1: 283ac47e126249589689aeb63bd46fb845d6617f SHA-256: 6b56afd80bbe4ce4f9baf7e709c9942053efbe368f6a95c49df952cc1299888c
142 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are SEO-optimized and point to sites offering game-related cheats or hacks. The presence of a fake CAPTCHA heuristic suggests a user interaction is required to proceed, likely leading to a malicious download or scam. The document's content and structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9348

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-unlimted-robux-for-free-game-hack
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-account-roblox-with-robux_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-unlimited-spin-link_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-robux-generator-without-human-verification_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-hack-app-for-iphone_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/roblox-rape_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/roblox-free-gears-hat-faces-clothes-2_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-reward-link-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/rblx-gg-free-robux_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-hack-dumb-brothers-roblox-accounts-easy_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/hack-coin-master-apk-32-download_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/roblox-free-skin_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/mcpe-com_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-to-get-roblox-credit-for-free_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/is-roblox-free-on-ps4_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-followers-generator-roblox_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-game-pack-with-google-play-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/roblox-hack-noclip_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-free-spins-youthnow_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/roblox-hack-download-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ac5.bin
adae8eefda57b020fc746e15019b5afac68ed5e7d70ff89900f1817e30d5ce8d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC5 26596 bytes
font_01_sfnt_off000089d9.bin
ddfd86c88a6b8304bc31eeb9f28c8110fac325cdacc87503bacf4ac741777490		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89D9 8704 bytes
font_02_sfnt_off0000a643.bin
838b6199066716355c35cdaf9a0e77b158920d763c4a11277e57723b8818196b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA643 18932 bytes

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