Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df2edbd2ad736b6…

MALICIOUS

PDF

35.6 KB Created: 2021-07-03 19:29:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8b8c8a6f07a6b623a0dff9fdb164311f SHA-1: 4ab9bbcf9ce202ebbbeb29b0d20dd9f9696df4b4 SHA-256: 6df2edbd2ad736b67fa30d6f0ed66085edebfff3d5ea1652f02380c21843dc8c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are presented as 'SEO links' and offer game hacks or free in-game currency. The primary URL, http://netcdn.tw/app/406889139/coin-master-hack-2021-apk-game-hack, suggests a lure for downloading potentially unwanted or malicious applications. While no scripts were explicitly extracted, the heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links designed to mimic search engine results, a common tactic for distributing malware or phishing content.

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/coin-master-hack-2021-apk-game-hack
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/do-roblox-gift-cards-give-you-free-robux_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/coin-master-pc-game-free-download_GM406889139.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/coin-master-free-coin-and-spin-app_GM406889139.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-robux-generator-without-verification_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/avoir-pleins-dhabit-dans-roblox-sans-hack_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/youtube-be-a-parkour-ninja-roblox-hack_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/how-do-i-get-robux-in-roblox-for-free_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/roblox-mining-sim-hack-pastebni-december-2021_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/how-to-make-a-cool-roblox-character-free_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/clothes-in-roblox-free_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/how-to-get-a-lot-of-robux_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-stuff-on-roblox_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/minecraft-pe_GM479516143.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/hack-coin-pro-coin-master_GM406889139.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/cheats-fr-roblox-jail-breack-beta_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdf
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034ae.bin
c3db8bf9332b5afda2c401850f4ed24670ae3217c6016890a68344bb3f3a56b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34AE 22664 bytes
font_01_sfnt_off00006757.bin
9ee7f6e729eaa8ccfa60f836f488dcd9dbdf367b2dcb4736acc286b6369c8b6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6757 18580 bytes

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