Malicious PDF — malware analysis report

Static analysis result for SHA-256 65982439b1beb4b0…

MALICIOUS

PDF

35.1 KB Created: 2021-06-22 19:39:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ad9840999eedc79de2c0d7804a36e20a SHA-1: 7dee6770ed6184c55d8d69743d1605a08208fb26 SHA-256: 65982439b1beb4b00c267ed6ffbc3b8cfeaadc1dc9929493bfbb02c07517dd5f
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are related to game hacks and exploits, suggesting a link farm or phishing attempt. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking malicious links. 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/hacks-for-roblox-injectors-game-hack
    • http://dana1157.com/images/games-that-give-free-robux_GM431946152.pdf
    • http://dana1157.com/images/roblox-q-to-speedhack-script-hack_GM431946152.pdf
    • http://dana1157.com/images/how-to-get-free-unlimited-robux-by-hacking_GM431946152.pdf
    • http://dana1157.com/images/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://dana1157.com/images/jailbreak-script_GM431946152.pdf
    • http://dana1157.com/images/minecraft-book-collection_GM479516143.pdf
    • http://dana1157.com/images/how-to-hack-speed-race-roblox_GM431946152.pdf
    • http://dana1157.com/images/roschashcom-earn-free-robux-by-watching-videos-and-completing-sirveys_GM431946152.pdf
    • http://dana1157.com/images/how-to-use-wurst_GM479516143.pdf
    • http://dana1157.com/images/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://dana1157.com/images/old-roblox-accounts-for-free_GM431946152.pdf
    • http://dana1157.com/images/how-to-buy-robux-for-free-2021_GM431946152.pdf
    • http://dana1157.com/images/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://dana1157.com/images/coin-master-hack-2021-apk-download_GM406889139.pdf
    • http://dana1157.com/images/roblox-vehicle-simulator-free-money-codes_GM431946152.pdf
    • http://dana1157.com/images/how-to-get-free-robux-on-roblox-easy-2021_GM431946152.pdf
    • http://dana1157.com/images/free-robux-scams_GM431946152.pdf
    • http://dana1157.com/images/gamekit-robux-free_GM431946152.pdf
    • http://dana1157.com/images/minecraft-java-free-trial_GM479516143.pdf
    • http://dana1157.com/images/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003104.bin
3dc2158a0681ba7ababf3762d0b798a35fea7b0dc7d22a1c928c422714641848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3104 22664 bytes
font_01_sfnt_off000063db.bin
c52ffe5aef959da1775032887961cdbba24c6f6bbf6aaef182384463489dfe58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DB 19112 bytes

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