Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a888798a7a71539…

MALICIOUS

PDF

33.6 KB Created: 2021-06-20 00:15:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 94d31f627846f7dc1dba8bcbc9666f64 SHA-1: f622ac9e154c8cdedd12440c422855f5838b3a48 SHA-256: 7a888798a7a715392175eea5fe64e43bfa1e155c2c63210dd3271acd55c1ad9d
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering cheats or hacks for popular games. The primary URL, http://netcdn.co/app/431946152/how-to-get-free-robux-2021-feb-eazy-game-hack, suggests a lure for downloading potentially unwanted or malicious software disguised as game cheats. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/how-to-get-free-robux-2021-feb-eazy-game-hack
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack-mod-menu_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-spin-app-reviews_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/sites-to-get-free-robux_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-roblox-key-words_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/como-hackear-roblox-sin-descargas_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-get-robux_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/bear-cheats-roblox_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-for-roblox-not-expired_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-free_GM479516143.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/minecraft-tiktok-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d44.bin
16419ef6321593cdc02aa440c6751934ee404a0a8f1e6191cf0a05856e0fe043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D44 21592 bytes
font_01_sfnt_off00005c67.bin
de1f692b73b49411063a108c60f50eecdd2acd4bb9aad9c3f13c89ab8ce82432		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C67 19648 bytes

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