Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4912ba94758416…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 23:49:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2cc72cd30ffab2174b5c199c04dab197 SHA-1: 1a847da28a08913d5ab563c32d8053a59dfe98a6 SHA-256: 1a4912ba9475841691dd4f0de1810eb2f74c3b32bc62ebc7f41fd2591d2043b5
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are presented as download lures for popular games and hacks. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, and the ML_NYX_PDF_MALICIOUS model strongly suggests malicious intent. The document body itself contains text related to game downloads and hack tools, reinforcing the phishing and potential malware distribution vector.

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/479516143/minecraft-free-download-2021-game-hack
    • http://opac.akafarma-aceh.ac.id/repository/infinite-jump-hack-roblox-2021_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-to-get-robux-for-free_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/robux-hack-generator_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-tix-and-robux-game_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-protect-jojo-roblox_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-downgrade-minecraft-pe_GM479516143.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-roblox-robux-2021-no-survey_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-roblox-hair-to-wear_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-apk-android-1_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-the-legendary-swords-2-rpg-roblox_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-on-roblox-hack-2021_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/roblox-shirts-for-boys-free-shipping_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/robux-match_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-roblox-with-inspect-element-no-blogspot_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/a-lot-of-robux_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/cheat-engine-roblox-super-power-simulator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f0f.bin
9379374befe188072f2134060db67bebc529559e56fed18c2e0eff81b285d087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0F 21612 bytes
font_01_sfnt_off00005dda.bin
36976dda1236646de4177dc54acc9d6ee631510c343a87c6d0858b98a716bba5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDA 18980 bytes

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