Malicious PDF — malware analysis report

Static analysis result for SHA-256 1247d81491362f98…

MALICIOUS

PDF

35.5 KB Created: 2021-06-30 09:44:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2f261fcfe5c5a0815c16cd89d5a14d89 SHA-1: e2b7a85bd8833f7a009504edba5effad0748a6c7 SHA-256: 1247d81491362f986b42cebbec54b498e1558a14bb58828bf9fb972d2eb1592c
102 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded URLs, many of which are structured as SEO-optimized links pointing to game-related hacks and cheats. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to lure users to these external resources. The document's content and numerous links suggest a phishing or malware distribution scheme.

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/free-admin-commands-roblox-jailbreak-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/hack-for-roblox-piano_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/dungeon-quest-roblox-hacks-script_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/your-free-trial-of-living-has-expired-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-download-or-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-more-than-20-letters-in-username_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/pubg-40-uc-buy_GM1330123889.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-comment-mettre-un-script-cheat_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-using-cheat-engine-66_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/girl-hair-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-the-conquerors-3-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.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_off000030ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EF 22836 bytes
SHA-256: 496f1740f32be39c3dade0da6d00d9aafdb94ea39959ab5115efb4087f078061
font_01_sfnt_off00006451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6451 19540 bytes
SHA-256: bc7a6d1c5508404f25132c32be414b5cbea705239153933516646405a685a69d

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