Malicious PDF — malware analysis report

Static analysis result for SHA-256 755fa52f2c962778…

MALICIOUS

PDF

44.9 KB Created: 2021-05-14 10:32:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0683709554e82141bebcefefaf49bd45 SHA-1: 3be0eca010dfa24d65552526be5a2f6e409ab4bc SHA-256: 755fa52f2c962778e73b197a155345a308de094b2b84a9ee358a72b48694d4c3
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links to other PDF files hosted on the IP address 118.174.0.244, presented under the guise of game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm designed to distribute further malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were directly extracted, the structure and embedded links strongly suggest a malicious distribution workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/card-hack-in-coin-master-game-hack
    • http://118.174.0.244/UserFiles/File/i-want-robux_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/coin-master-hack-2021-android-apk_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/free-robux-mod_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/free-spins-on-coin-master-without-human-verification_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/roblox-tracker_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/free-robux-no-human-verification-generator_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/today-free-spin-coin-master_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/minecraft-xray-hack_GM479516143.pdf
    • http://118.174.0.244/UserFiles/File/coin-master-fan-page-giveaway_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/how-to-get-free-minecoins-in-minecraft_GM479516143.pdf
    • http://118.174.0.244/UserFiles/File/free-minecraft-premium-account_GM479516143.pdf
    • http://118.174.0.244/UserFiles/File/roblox-free-robux-generator_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/20210-free-spin-links-for-coin-master_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/can-you-actually-get-free-robux_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/free-robux-real-2021_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/how-to-get-free-robux-website_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/coin-master-free-attack-hack_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/minecraft-pe-free-download-android_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a04.bin
af969563cfab5b65bb093a84b71e1107f5f1df4db2d515116bb6eaff8528022d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A04 25072 bytes
font_01_sfnt_off00008436.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8436 2880 bytes
font_02_sfnt_off00008e20.bin
eac9cb42de6513dc6552a50abee069bf35bf7768323d30e076f8ef6ec09f6223		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E20 17888 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.