Malicious PDF — malware analysis report

Static analysis result for SHA-256 db74f372716eaee2…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 17:19:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0fb8f9bd65c355a62f631029ec109490 SHA-1: 69df3f1ecca26aa56cd74a0f3a95135dde1edb50 SHA-256: db74f372716eaee22b8cdeb4b2554be3ddda4023d40cc332721c798a29027ae8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO link farms for popular games. The document body explicitly mentions 'Get Free Coins On Coin Master' and includes a direct URL to a potential download or scam page. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of a phishing or malware distribution attempt.

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.tw/app/406889139/get-free-coins-on-coin-master-game-hack
    • http://perpustakaanlia.net/katalog/repository/free-roblox-followers-generator_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/como-hackear-los-robux-de-roblox_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/coin-master-free-spins-for-today_GM406889139.pdf
    • http://perpustakaanlia.net/katalog/repository/free-robux-for-kids-100-working_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/noclip-hacks-roblox_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/free-spins-coin-master-links-blogger_GM406889139.pdf
    • http://perpustakaanlia.net/katalog/repository/free-code-to-a-roblox-robux-reedeem-card_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/free-secret-roblox-name-pass-hack_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/how-to-get-roblox-games-that-cost-robux-for-free_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/roblox-free-packages-2021_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/cool-free-robux_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/roblox-booga-booga-cheat-engine_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/free-minecraft-capes-no-mods_GM479516143.pdf
    • http://perpustakaanlia.net/katalog/repository/roblox-hack-2021-working_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/how-to-get-robux-no-hack_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/how-to-get-free-robux-on-roblox-no-survey_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/how-to-get-free-robux-clothes_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/roblox-clothing-free-edit-avatar_GM431946152.pdf
    • http://perpustakaanlia.net/katalog/repository/coin-master-free-spins-no-survey_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031d7.bin
5422496db80f38a50a921125800b6381b01c088adc9cc7b3c56066d8a2f8379c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31D7 22572 bytes
font_01_sfnt_off0000641b.bin
84abfb78fff46ba9d1cedccb39989fd511fb56f98da01a72a76aef3ac1dd5f54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641B 17996 bytes

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