Malicious PDF — malware analysis report

Static analysis result for SHA-256 3710f542c971e9fe…

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 11:32:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9dd4d5fd573436b97e4140f511d6f036 SHA-1: 58a82a111c4672e77e40592de287d61058eac9c3 SHA-256: 3710f542c971e9fee94036e36d5edb956204cc7256e253adc3804d97446af45e
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many of which are hosted on domains suggesting game-related cheats or rewards. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's content and structure strongly suggest a lure for downloading malware or engaging in phishing.

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-injector-roblox-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/robux-rewards_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/bad-business-cheat-roblox-tuto_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-god-mode-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/como-hackear-la-cuenta-de-tu-amigo-en-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-cheat-table-online_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-for-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC4 22148 bytes
SHA-256: d21290f990157079c397cbfc8c19fdbd3e4b260e45290df960a733018fcb09c4
font_01_sfnt_off00005eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EED 18948 bytes
SHA-256: 6a0e7c08f85439c01971d31690888a3191bff6b883e400b1e7a289f9934fd937

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