Malicious PDF — malware analysis report

Static analysis result for SHA-256 949812c218032b64…

MALICIOUS

PDF

34.7 KB Created: 2021-07-02 01:37:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fbc070d8f2334f9406e93810b097933a SHA-1: 21e455845cc49f0ac01d277446dbb5763fab82ff SHA-256: 949812c218032b641ccb311852d084b1edee7be7b95d88f387fd81f015abf31c
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a link farm, strongly suggesting a malicious intent to redirect users to external sites. The document body explicitly mentions hacks and downloads for games like Roblox, indicating a lure for potentially unwanted or malicious software. The ML classifier also flagged this PDF with high confidence.

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/roblox-jailbreak-teleport-hack-download-game-hack
    • https://griyafirdaus.com/ckfinder/userfiles/files/daily-free-spin-coin-master-link_GM406889139.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-golden-card-hack_GM406889139.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux-2021_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/roblox-highschool-2-hack-script-pastebin-money_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/get-free-coin-master_GM406889139.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/coin-master-free-spins-apple_GM406889139.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-free-quirks-in-boku-no-roblox_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/roblox-how-to-use-cheat-engine_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/robux-hack-no-verifcation-no-suvery-no-nothing_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/rbxraincom-free-robux_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/roblox-hack-free-robux-amp_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/admin-cheats-for-roblox_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/roblox-hacks-ohne-viren_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/hack-robux_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-earn-free-robux_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/free-robux-website_GM431946152.pdf
    • https://griyafirdaus.com/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea0.bin
e9a1ed13598a9d4e1ac95bbe11b53be9e622fb0c404e646120f2f160f2a45834
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA0 22356 bytes
font_01_sfnt_off00006096.bin
42b6b53209b118a276f91cd2d9346abb5e6c086ae2d53345376ecddce36e0535
pdf-font-stream PDF embedded font (sfnt) at offset 0x6096 19728 bytes