Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d41c7ac2a0f2b0…

MALICIOUS

PDF

42.9 KB Created: 2021-05-18 03:38:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 055b8a16cf88347fd81954e6a4fc2842 SHA-1: a9863f1c5533e260f272dbeaec48b05c61cd88f2 SHA-256: 83d41c7ac2a0f2b0136e3236087ecffdc11ba089a746c7881bc365dd53262602
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are SEO-optimized slugs pointing to game-related hacks and freebies. The document body also contains a direct link to a site offering 'free roblox game hack'. This suggests a link farm or phishing campaign designed to drive traffic to potentially malicious sites. No scripts were extracted, but the PDF structure and link farm indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/get-free-roblox-game-hack
    • http://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-today-daily-links_GM406889139.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/roblox-army-robux_GM431946152.pdf
    • http://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • http://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/how-to-hack-in-arsenal_GM431946152.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/free-coin-master-spins-hack_GM406889139.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/free-minecraft-resource-packs_GM479516143.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/rbx-com_GM431946152.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spins_GM406889139.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-jailbreak_GM406889139.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/google-how-do-you-get-robux_GM431946152.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/bloxpage-free-robux_GM431946152.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/how-long-is-the-minecraft-free-trial_GM479516143.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/free-robux-human-verification_GM431946152.pdf
    • http://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdf
    • http://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/coin-master-connection-lost_GM406889139.pdf
    • http://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-apple_GM406889139.pdf
    • https://elearning.man1indramayu.sch.id/__statics/gudangsoal/files/how-to-earn-free-spin-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b61.bin
e3115f65489486e3d275f94883c9a715eb4d0a9bb364fcaaba56c566d98c5ccd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B61 25860 bytes
font_01_sfnt_off0000861e.bin
3163a373a79a6ba2b402f3bc3abf4e04b0a5713e8f73e060e65042d4a11df7ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x861E 18052 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.