Malicious PDF — malware analysis report

Static analysis result for SHA-256 48fef0c861612242…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 10:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2c340dac5c37d673a999d458dbf22ceb SHA-1: 9f9d3a82aaf9521b60fac591144d617b472b126b SHA-256: 48fef0c861612242572aa305701a8ce658d5f1573bc4c74ead018eb016221a3b
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which are SEO-optimized slugs pointing to external resources. The primary external URL and many embedded links suggest a lure for free in-game currency or hacks, a common tactic for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/free-coin-master-spins-link-game-hack
    • http://library.itekes-bali.ac.id/repository/robux-free-com_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-premium-free_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/link-for-free-coins-in-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spin-app-iphone_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-minecraft-hacks_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/best-roblox-hacks_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-mobile_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-2021-generator_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/today-free-spin-link-for-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-pet-food-hack_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-fast_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-xray-hack_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051ac.bin
084ad8dcbca8ec57aa41f55829a56960c69d2002b85e92aad70e90412774675a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51AC 25120 bytes
font_01_sfnt_off00008b1f.bin
3a13f115a00b8b7b194300b8b076c3bf70984f89fe406390bc378e2507b22e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1F 18056 bytes

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