Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24a4314aef09dc6…

MALICIOUS

PDF

45.9 KB Created: 2021-05-17 07:40:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 92415973c8b06e8e31601dc7fa69c3de SHA-1: 2bf19d2a5765eceac56d457150425112f82bb44f SHA-256: f24a4314aef09dc6ec302937c39ba4571de3124c194e6192c8379f8bd5494ddb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are related to game hacks and cheats, suggesting a lure for users to download potentially malicious content or visit phishing sites. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure itself facilitates the embedding of numerous URIs, which are the primary indicators of malicious intent in this case.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/479516143/classic-minecraft-net-hacks-game-hack
    • https://dirigentigiustizia.it/images/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • https://dirigentigiustizia.it/images/cheats-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://dirigentigiustizia.it/images/free-robux-safe_GM431946152.pdf
    • https://dirigentigiustizia.it/images/instant-robux_GM431946152.pdf
    • https://dirigentigiustizia.it/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • https://dirigentigiustizia.it/images/how-to-hack-people-on-roblox_GM431946152.pdf
    • https://dirigentigiustizia.it/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdf
    • https://dirigentigiustizia.it/images/free-coin-master-coins_GM406889139.pdf
    • https://dirigentigiustizia.it/images/free-coin-master-cheats_GM406889139.pdf
    • https://dirigentigiustizia.it/images/coin-master-free-account_GM406889139.pdf
    • https://dirigentigiustizia.it/images/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • https://dirigentigiustizia.it/images/free-coin-master-spins-blog_GM406889139.pdf
    • https://dirigentigiustizia.it/images/free-robux-websites-that-actually-work_GM431946152.pdf
    • https://dirigentigiustizia.it/images/real-robux-generator-2021_GM431946152.pdf
    • https://dirigentigiustizia.it/images/robux-hack-tools_GM431946152.pdf
    • https://dirigentigiustizia.it/images/claim-free-spins-coin-master_GM406889139.pdf
    • https://dirigentigiustizia.it/images/coin-master-free-spins-daily_GM406889139.pdf
    • https://dirigentigiustizia.it/images/free-robux-no-verification-required_GM431946152.pdf
    • https://dirigentigiustizia.it/images/best-free-spin-app-for-coin-master_GM406889139.pdf
    • https://dirigentigiustizia.it/images/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d28.bin
bf3fb50828cf0377a56f477423eb2030a2630c344feb8fb64c6b1cbf6d72724d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D28 25908 bytes
font_01_sfnt_off000087f8.bin
3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x87F8 3092 bytes
font_02_sfnt_off000092a3.bin
06eb0692cb0ff670c8084f221f19fc536b6b0c4a84b00058b05a05adc7fae17c
pdf-font-stream PDF embedded font (sfnt) at offset 0x92A3 17812 bytes