Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2a978d5abc4fdb…

MALICIOUS

PDF

35.4 KB Created: 2021-07-08 13:41:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 64e6e5d9628294f6cc57d430df4aac98 SHA-1: 098af2a4188e1dcb1da258fc2374ea26dcd80bf8 SHA-256: 7d2a978d5abc4fdbef3be96b5f5cbb150263c0a4500f8661e64b6779a72ad9e7
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, identified as a link farm, that direct users to websites promising free in-game currency for popular games like Coin Master and Roblox. The ML classifier strongly flagged this PDF as malicious, and the presence of these deceptive links suggests a phishing or scam attempt. The document's content and structure indicate it's designed to trick users into visiting potentially harmful external sites.

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/how-to-get-free-coins-in-coin-master-game-hack
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/minecraft-world-free-download_GM479516143.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/hacker-website-prank-to-get-free-robux_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-play-roblox-for-free_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-free-spins-twitter_GM406889139.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/8bp-hack-coin-master_GM406889139.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/roblox-hack-build-your-own-boat-ccv7_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coinmasterfree_GM406889139.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-hacks-that-actually-work_GM406889139.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-fan-club_GM406889139.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification-2021_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/apocalypse-rising-roblox-cheats_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/is-roblox-studio-free_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-get-tiktok-free-followers_GM835599320.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/set-you-free-roblox-id_GM431946152.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdf
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032a2.bin
96e0d2e04e7494462de87bdc71f1250c3b775702bbc25ee1ecce9b4241bbdd95		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32A2 23872 bytes
font_01_sfnt_off00006839.bin
9fab875a536b983537b9433768b1ea3e5c55ad95c87001a66781b974c182b662		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6839 18164 bytes

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