Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba1c6420e583437…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 08:03:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dbfe3d776e47e132018474816c288377 SHA-1: 7685c3e132a68af7c95e715e13a3421f6f902178 SHA-256: 4ba1c6420e5834370e78594d41321ffc7ab5e0b5d15e1f2dfd9b7288b5a2077a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are disguised as links to other PDFs related to game hacks and cheats. The document body explicitly mentions "Como Hackear Uma Conta Do Roblox" and includes a URL pointing to a similar topic. The ML classifier and PDF link farm heuristics strongly indicate malicious intent, likely to distribute malware through these deceptive links.

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.co/app/431946152/como-hackear-uma-conta-do-roblox-game-hack
    • http://aviaprofsoyuz.info/images/coin-master-hack-apk-android_GM406889139.pdf
    • http://aviaprofsoyuz.info/images/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://aviaprofsoyuz.info/images/coin-master-mod-version-free-download_GM406889139.pdf
    • http://aviaprofsoyuz.info/images/how-to-get-free-wings-in-roblox-promo-codes_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/tiniest-roblox-avatr-with-free-items_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/roblox-scp-foundation-model-free_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/coin-master-free-spins-app_GM406889139.pdf
    • http://aviaprofsoyuz.info/images/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdf
    • http://aviaprofsoyuz.info/images/como-hackear-coin-master-2021-espaol_GM406889139.pdf
    • http://aviaprofsoyuz.info/images/earn-free-robux-on-roblox_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/minecraft-games-online-free-no-download_GM479516143.pdf
    • http://aviaprofsoyuz.info/images/roblox-free-robux-generator_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/free-promo-codes-for-roblox-2021_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/coin-master-card-hack_GM406889139.pdf
    • http://aviaprofsoyuz.info/images/how-to-hack-m-coins-mcpe-master_GM406889139.pdf
    • http://aviaprofsoyuz.info/images/bubble-gum-sim-roblox-hack_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/free-avater-maker-roblox_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/roblox-com-cheat_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/free-hair-roblox-no-model_GM431946152.pdf
    • http://aviaprofsoyuz.info/images/coin-master-hack-unlimited-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003016.bin
4cbd466d905963c585cdd358c73bfab1c57a8bccd7f66f5ad9670cdb7171fe82
pdf-font-stream PDF embedded font (sfnt) at offset 0x3016 22124 bytes
font_01_sfnt_off00006103.bin
eda59cab4d24ad88b0781e2776e5b1bad157ba8ecfc87492f7863833a40c4bcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6103 19188 bytes