Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5939e045f3604f…

MALICIOUS

PDF

34.5 KB Created: 2021-06-19 00:42:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1758ba0193f4674aaba30b6e8bebf548 SHA-1: 7af77c748274d9412140593631756574ac7ca727 SHA-256: 0c5939e045f3604f668bc004f0620b51bcba3b4a30475283c1f16d37e09526b1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which are structured as SEO-optimized PDF slugs pointing to sites offering free in-game currency or hacks for popular games like Roblox and Coin Master. The document body text and the numerous URLs suggest a link farm designed to attract users searching for cheats, likely redirecting them to malicious sites or download pages. The ML classifier also strongly indicated maliciousness.

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/este-pagina-hack-te-regala-muchos-robux-en-roblox-funcionando-game-hack
    • http://ipdrs.org/images/how-to-get-minecraft-coins-for-free_GM479516143.pdf
    • http://ipdrs.org/images/games-that-give-free-robux_GM431946152.pdf
    • http://ipdrs.org/images/free-robux-no-verify-2021_GM431946152.pdf
    • http://ipdrs.org/images/free-coins-spins-on-coin-master_GM406889139.pdf
    • http://ipdrs.org/images/how-to-get-free-coins-in-mcpe-master_GM406889139.pdf
    • http://ipdrs.org/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • http://ipdrs.org/images/freerobu-in-free-robux_GM431946152.pdf
    • http://ipdrs.org/images/get-free-robux-easiest-way_GM431946152.pdf
    • http://ipdrs.org/images/how-to-get-free-roblox-money_GM431946152.pdf
    • http://ipdrs.org/images/pokemon-go-free-app_GM1094591345.pdf
    • http://ipdrs.org/images/roblox-bloxburg-hack_GM431946152.pdf
    • http://ipdrs.org/images/coin-master-hack-without-verification-ios_GM406889139.pdf
    • http://ipdrs.org/images/google-coin-master-free-spins_GM406889139.pdf
    • http://ipdrs.org/images/free-robux-no-offers_GM431946152.pdf
    • http://ipdrs.org/images/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://ipdrs.org/images/mobi-hack-robux-hack_GM431946152.pdf
    • http://ipdrs.org/images/coin-master-free-spins-apk-2021_GM406889139.pdf
    • http://ipdrs.org/images/roblox-royale-high-diamond-hack_GM431946152.pdf
    • http://ipdrs.org/images/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://ipdrs.org/images/emperor-cheat-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f36.bin
f221c46d2fd134142b64a48dd71eff43136132cd949a8fa453dd90816055019e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F36 22240 bytes
font_01_sfnt_off00006059.bin
47ec40030334818c5e1dd5e6f2be29f5183d2c241d136cfe52500d5de8524cbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6059 19688 bytes

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