Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebfc65044d81e78…

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 15:28:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3b65b6f662f25221dc499a7f922e216b SHA-1: 7c126104c6f767a068097c181e9178edf8d2c53c SHA-256: cebfc65044d81e78533bcd036eabb8a06e691316c0f4a44d2efba1830c029b76
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous embedded URLs that form a link farm, likely intended to direct users to malicious content or phishing sites. The document body and extracted URLs suggest a lure related to game cheats and hacks for popular games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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/how-to-cheat-in-dna-on-ds-roblox-game-hack PDF link annotation
    • http://stikespantirapih.ac.id/home/repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/infinite-robux-no-human-verification-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-booga-booga-noob-vs-pro-vs-hacker_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-coins-in-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-robux-for-wiewers_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-bubble-gum-simulator-free-pets_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-bird-in-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-meep-city-hacks_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-no-scam-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-how-to-get-shirt-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3076 21992 bytes
SHA-256: 71491645af1a1a0e6660e41d86971b7807fa66cd5a5c80d894bf4ee10aba4a10
font_01_sfnt_off000060a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A9 19088 bytes
SHA-256: f9f3a611bc4cb0b7d45af5f2f3bc0f705fa3c3e84f63f408a2c9f92f357b8bfc

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