Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d020b61364320b…

MALICIOUS

PDF

34.2 KB Created: 2021-06-18 13:06:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ee0bd9b03304cc8b8c80edba6b74c2fd SHA-1: 5cf3769329f7ffc635542ee7fcf36cb230b906a4 SHA-256: 24d020b61364320be18d3f504134ac5a95fe0851301fb1d62ea0996dde71bb95
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 links, many of which are SEO-optimized and point to pages offering game hacks and free in-game items. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly flagged the PDF as malicious. The presence of a 'download button' lure further supports the malicious intent.

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/dayz-roblox-item-hack-game-hack
    • http://mycookingpot.com/images/coin-master-hacks-for-free-spins_GM406889139.pdf
    • http://mycookingpot.com/images/how-to-get-free-robux-real-life_GM431946152.pdf
    • http://mycookingpot.com/images/free-spin-link-coin-master_GM406889139.pdf
    • http://mycookingpot.com/images/get-free-spins-coin-master_GM406889139.pdf
    • http://mycookingpot.com/images/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://mycookingpot.com/images/how-do-u-get-robux_GM431946152.pdf
    • http://mycookingpot.com/images/wurst-112-2_GM479516143.pdf
    • http://mycookingpot.com/images/tiktok-free-fans_GM835599320.pdf
    • http://mycookingpot.com/images/free-back-accessories-roblox_GM431946152.pdf
    • http://mycookingpot.com/images/free-robux-codes-2021-real_GM431946152.pdf
    • http://mycookingpot.com/images/robux-hack-no-human-verification-2021_GM431946152.pdf
    • http://mycookingpot.com/images/take-a-quize-for-free-robux-gift-card_GM431946152.pdf
    • http://mycookingpot.com/images/free-robux-earn_GM431946152.pdf
    • http://mycookingpot.com/images/free-robux-websites-2021_GM431946152.pdf
    • http://mycookingpot.com/images/apps-to-get-free-robux_GM431946152.pdf
    • http://mycookingpot.com/images/coin-master-hack-cydia_GM406889139.pdf
    • http://mycookingpot.com/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdf
    • http://mycookingpot.com/images/coin-master-hack-version-apk-download_GM406889139.pdf
    • http://mycookingpot.com/images/how-to-pubg-uc-transfer_GM1330123889.pdf
    • http://mycookingpot.com/images/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e45.bin
59cbfe80da655040158969b2951ec13ae7cce149e0b1214d7b768a2d12e12212
pdf-font-stream PDF embedded font (sfnt) at offset 0x2E45 22200 bytes
font_01_sfnt_off00005fbe.bin
f406aa06aea7dfd90fc5559774533b263fca33862e641f88a5f58bbe65ac8776
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBE 19264 bytes