Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb2f7b900db740f0…

MALICIOUS

PDF

40.8 KB Created: 2021-05-12 23:31:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f6f4daf1b337b578f472dd23534c5d3d SHA-1: cc64d8c0e026ba194e9a4c0f69c82c72c358b362 SHA-256: fb2f7b900db740f015471425dd0fc518f3ef9ee90c5b57931def4a70b6099d47
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, forming a link farm designed to direct users to pages offering game hacks and cheats. The presence of a visual download button lure and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further potentially harmful content. No scripts were extracted, but the structure suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/rbx-website-game-hack PDF link annotation
    • http://no-no-gos.de/images/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/robux-earning-sites_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://no-no-gos.de/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://no-no-gos.de/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/coin-master-free-coins-and-spins_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_off000047b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47B2 23756 bytes
SHA-256: 7de1c2f857adeb1949c540100f1acef6825ac7ad3fbd198a94316c09b89862ae
font_01_sfnt_off00007dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAB 17988 bytes
SHA-256: bc0dd22a51e0bfdba65e2d9b03a977bfdec689b5f568798d86fd7f99b01c2070

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