Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f4bba7dee8777e…

MALICIOUS

PDF

34.6 KB Created: 2021-06-25 14:24:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f650443d8830c2dc1c32722e03a044ea SHA-1: 2bc86b2c1034dd3cd425f33f28f6c2d1205bfc0e SHA-256: 56f4bba7dee8777eb89a2a101b1ec0b68851299985069337e7fda4269d50d6b9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains numerous links to external resources, many of which are algorithmically generated and point to sites offering free in-game currency or hacks. The ML classifier strongly indicates maliciousness, and the presence of a download button lure reinforces the intent to trick users into downloading further malicious content. No scripts were extracted, but the document's structure and embedded URLs suggest it's a phishing lure for game-related exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/fortnite-free-robux-game-hack
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-robux-kid-friendly_GM431946152.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/hack-coin-master-site-rssingcom_GM406889139.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/tiktok-free-followers_GM835599320.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/hack-para-coin-master-sin-verification_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/best-free-roblox-executor_GM431946152.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/robuxmatch-com-free-robux_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-free-robux_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-october-2021_GM406889139.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-roblox-account-dump-2021_GM431946152.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-games-like-coin-master_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-robux-codes-not-used_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-robux-groups-2021_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-hack-extension_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-free_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-daily-spins-and-coins_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003063.bin
a6e29fe9750ce528f05b16aad875e7c5d5e586caf3aadaef6d229ced88b3542c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3063 22544 bytes
font_01_sfnt_off000062a7.bin
d984affdb3f7819fa7e685bf91521375eaa0c2ea46d5032e307b9a0bac204f11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A7 18940 bytes

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