Malicious PDF — malware analysis report

Static analysis result for SHA-256 5313e60fbd183e46…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 04:10:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: baa6d92245ee11ebe9e4a9c9b8099521 SHA-1: 986a3a1c1f3d8290d7ef1091f2cbdccc5acc1922 SHA-256: 5313e60fbd183e46f923c689a0af0df0165c2e7bb43277bcfc3c6e706a5a68cd
102 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 pages offering game cheats and hacks, including a direct link to an application download. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful software. The document's content and structure strongly suggest a lure for downloading unwanted applications or malware.

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/android-fast-robux-hack-game-hack
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-cheat-on-risky-strats-roblox_GM431946152.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/roblox-hack-tool_GM431946152.pdf
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/cheat-codes-for-hoes-roblox-id_GM431946152.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/roblox-free-executor_GM431946152.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/hackear-roblox-robux_GM431946152.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdf
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/roblox-f1-track-free_GM431946152.pdf
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/today-coin-master-spin-free_GM406889139.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free_GM479516143.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/admin-commands-roblox-hack-script_GM431946152.pdf
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdf
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/latest-coin-master-free-spins-link_GM406889139.pdf
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/robux-gratis-hack-pc_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ad.bin
f0056497c0f2d91507cada744182b8ca59d5228ed7a1e63e6aa73c1286696476		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31AD 22368 bytes
font_01_sfnt_off0000638a.bin
5f8e96bd0719b2668d6e494ceac9db34111c415e370859586e4fb888101e7999		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638A 19284 bytes

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