Malicious PDF — malware analysis report

Static analysis result for SHA-256 48a91b1d05c0dd66…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 03:27:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6cb2252ede7c72c5b95c69899be1060f SHA-1: cf832bbc8460d15d6b1fc56fb409ef64e51b85bd SHA-256: 48a91b1d05c0dd66828dd9b56470c7dc8d657b7c7f8ba5147b259f3f7e202f8b
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 SEO-optimized and point to pages offering game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a visual download button lure suggests an attempt to trick users into downloading malicious content. While no scripts were directly extracted, the PDF structure and extensive link farm are indicative of a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-unlimited-spin-hack-mod-apk-game-hack
    • http://bagliomangiapane.it/images/how-to-make-free-robux_GM431946152.pdf
    • http://bagliomangiapane.it/images/coin-master-spin-link-today-free_GM406889139.pdf
    • http://bagliomangiapane.it/images/coin-master-collect-today-free-spin_GM406889139.pdf
    • http://bagliomangiapane.it/images/claim-free-robux-button_GM431946152.pdf
    • http://bagliomangiapane.it/images/how-to-get-free-robux-hack_GM431946152.pdf
    • http://bagliomangiapane.it/images/blox-supply-free-robux_GM431946152.pdf
    • http://bagliomangiapane.it/images/how-to-hack-coin-master-spin-ios_GM406889139.pdf
    • http://bagliomangiapane.it/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • http://bagliomangiapane.it/images/how-to-hack-minecraft-pe_GM479516143.pdf
    • http://bagliomangiapane.it/images/how-to-get-free-premium-roblox_GM431946152.pdf
    • http://bagliomangiapane.it/images/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://bagliomangiapane.it/images/free-accessories-roblox_GM431946152.pdf
    • http://bagliomangiapane.it/images/coin-master-spin-hack-link_GM406889139.pdf
    • http://bagliomangiapane.it/images/free-roblox-groups-with-funds_GM431946152.pdf
    • http://bagliomangiapane.it/images/roblox-hacked-version-download_GM431946152.pdf
    • http://bagliomangiapane.it/images/roblox-com-games-referrer-roblox-player_GM431946152.pdf
    • http://bagliomangiapane.it/images/free-robux-mobile_GM431946152.pdf
    • http://bagliomangiapane.it/images/coin-master-free-spins-2021_GM406889139.pdf
    • http://bagliomangiapane.it/images/how-to-hack-coin-master-spin_GM406889139.pdf
    • http://bagliomangiapane.it/images/hack-xp-net-generators-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a9f.bin
afd5714a4ce13dc613192275cb156605aa2db13779e0a9ba88159dabfb6b7573
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9F 24680 bytes
font_01_sfnt_off000081c5.bin
1f0ff171152404fee35ded77e01b9724573d4b9224166749f75d1c5d7d8d4db8
pdf-font-stream PDF embedded font (sfnt) at offset 0x81C5 18584 bytes