Malicious PDF — malware analysis report

Static analysis result for SHA-256 f455da72b5fd48b7…

MALICIOUS

PDF

33.3 KB Created: 2021-06-19 19:26:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 08ddb2eb17333fdcf4c5e67208cfa14f SHA-1: 58f20a6a4f3de94fbccbe0b7937e89cb4c6d999b SHA-256: f455da72b5fd48b789427ad800956489d1d0c1b38437de5e4a246707fde649fc
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, many of which are presented as links to game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to drive traffic to potentially harmful content. The document body itself contains references to 'Pastebin Roblox Account Hack' and includes numerous URLs, reinforcing the lure for users seeking game exploits.

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/pastebin-roblox-account-hack-game-hack PDF link annotation
    • http://repository.ummy.ac.id//repository/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-do-you-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-roblox-groups-with-funds-list_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-booga-booga-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-super-power-training-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/tuto-comment-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-cafe-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/my-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/ways-to-get-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_off00002da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA7 21556 bytes
SHA-256: df420cddb744f04fea7fbcf881bd9e16f1ea90a88fd67b8aa4c5d30e3f37adfa
font_01_sfnt_off00005cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD4 19176 bytes
SHA-256: a091ae8059987ec4ddc53218ee2639d06844d2cdd33068f06cb4901681941439

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