Malicious PDF — malware analysis report

Static analysis result for SHA-256 b621c20b2157bf41…

MALICIOUS

PDF

32.3 KB Created: 2021-06-30 12:26:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bdf1553100099db0a59f449bfc795802 SHA-1: a4d74388f6246eb979c145067f34f7b45c60239b SHA-256: b621c20b2157bf41aa542e8f68b5ba8f0e82f86f0c92f703519380613a0cd96f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and text promoting free in-game currency and cheats for popular games, strongly suggesting a phishing or scam lure. The ML classifier and PDF link farm heuristics indicate a high likelihood of malicious intent, likely directing users to malicious websites. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the content suggest a potential for JavaScript execution or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/robux-free-site-game-hack
    • http://perpus.ar-rum.ac.id/repository/roblox-imperial-base-free-model_GM431946152.pdf
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdf
    • http://perpus.ar-rum.ac.id/repository/cheat-engine-64-download-roblox_GM431946152.pdf
    • http://perpus.ar-rum.ac.id//repository/how-to-get-free-robux-hack_GM431946152.pdf
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-spin-link-today-download_GM406889139.pdf
    • http://perpus.ar-rum.ac.id//repository/robux-hack-2021_GM431946152.pdf
    • http://perpus.ar-rum.ac.id/repository/how-to-hack-in-roblox-to-rank-up-a-group_GM431946152.pdf
    • http://perpus.ar-rum.ac.id//repository/free-coins-on-coin-master-without-verification_GM406889139.pdf
    • http://perpus.ar-rum.ac.id//repository/free-coins-coin-master_GM406889139.pdf
    • http://perpus.ar-rum.ac.id//repository/free-roblox-followers-generator-2021_GM431946152.pdf
    • http://perpus.ar-rum.ac.id//repository/how-to-get-free-roebucks-without-verification_GM431946152.pdf
    • http://perpus.ar-rum.ac.id/repository/how-to-get-a-free-2021-roblox-acc_GM431946152.pdf
    • http://perpus.ar-rum.ac.id/repository/hacking-into-games-vip-rooms-roblox_GM431946152.pdf
    • http://perpus.ar-rum.ac.id//repository/rbxfree-com-free-robux_GM431946152.pdf
    • http://perpus.ar-rum.ac.id//repository/how-can-you-get-minecraft-for-free_GM479516143.pdf
    • http://perpus.ar-rum.ac.id//repository/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://perpus.ar-rum.ac.id/repository/free-auto-clicker-for-roblox-ios_GM431946152.pdf
    • http://perpus.ar-rum.ac.id/repository/how-to-hack-on-jailbreak-roblox-ipad_GM431946152.pdf
    • http://perpus.ar-rum.ac.id/repository/free-items-roblox-2021-hack_GM431946152.pdf
    • http://perpus.ar-rum.ac.id//repository/minecraft-wurst_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a2b.bin
b257c324457a820171b2e17ddbbbc2664503846725d14ddf57594e6c0c339823		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2B 21644 bytes
font_01_sfnt_off000059a5.bin
8c87ca71e13ab49aef9417be001d718e1fe64815f751c98faa10d2c12af0c629		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A5 18940 bytes

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