Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff3f0bfa9401cee4…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 03:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cc7c787742c98e2de96113232e260728 SHA-1: b8b4245c9a4ab39ab2c563624140b04f48ff006e SHA-256: ff3f0bfa9401cee45268d023f5c9e180cec987f66195b70fa87d7d3e8bd47406
102 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are SEO-optimized and point to documents related to game cheats and hacks. One prominent link directs to 'http://netcdn.co/app/431946152/free-robux-and-tix-place-game-hack', suggesting a lure for users to download potentially unwanted or malicious applications. The presence of a 'download button' heuristic further supports this malicious workflow.

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/free-robux-and-tix-place-game-hack PDF link annotation
    • https://library.fdk.ac.id/repository/how-to-get-free-faces-on-roblox-2021-no-download_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-hack-pro-gamers-com_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-dynamic-ship-simulator-iii-money-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-hack-roblox-vehicle-simulator-money_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/script-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-scam-ad_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-phantom-forces-money-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-hack-pastebin-fast_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-robux-hack-mod_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/pubg-uc-free-generator_GM1330123889.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-download-free-microsoft_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3492 22284 bytes
SHA-256: 02d8f1b3b753c4ac4661ad631d69425e6a5c1c568c67d264c4abcfb79c0a545c
font_01_sfnt_off000065f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F0 19240 bytes
SHA-256: c13b2779a78bcaaa5833137c0384e657511ff899c649a1540d1bf5eb2f3fe114

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