Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe7adfbed803515…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 06:12:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7ae66f8f0bce9819b5db9509384a5e6d SHA-1: 8554faf889e7b62e9c8d1790ff74eff4cb32041c SHA-256: 0fe7adfbed803515d330b06b56b1aeef97bc77777e2517ff09d799628f42d23a
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are related to game hacks and cheats, suggesting a lure for potentially unwanted content. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URIs further supports a malicious intent. The document likely aims to trick users into visiting these links, which could lead to malware downloads or other harmful activities.

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/counter-blox-roblox-offensive-hacks-2021-game-hack PDF link annotation
    • http://lib.kunci.or.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/como-hackear-roblox-para-tener-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/vehicle-simulator-hack-money-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-roblox-pro-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/hair-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/cheats-on-roblox-assasin_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-hack-sword-fight-on-the-heights-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-add-a-second-floor-in-roblox-bloxburg-free_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-hack-accountds-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/claim-free-robux_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_off00003202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3202 23016 bytes
SHA-256: 541d47b2cea720159aaa9bebec33a9bf21e43a6d07ac0cdaef67fcda8f797d23
font_01_sfnt_off00006585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6585 19536 bytes
SHA-256: 79214a24b664af52a262a75b87da172f391e051f7b7a22a375686560b0904378

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