Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ab6619b91938d6…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 09:00:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dc5ae9aac9f1def51da1d3017dcd73d4 SHA-1: 87685cdb60472ee718f153abf1bfc8b3126cc203 SHA-256: f2ab6619b91938d62f80f07de6076009c2e8292587b9b20f594e0bcff479722d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are structured as a link farm pointing to game-related cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs suggests an attempt to redirect users to malicious sites. The document body and heuristics indicate a lure for game-related exploits, likely leading to malware download or credential harvesting.

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.tw/app/431946152/completely-black-pants-roblox-free-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/how-you-get-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-account-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-cheat-tycoons-on-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/pubg-uc-code-redeem_GM1330123889.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-webs-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-robux-hack-no-survey-no-password_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/synapse-roblox-free_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
stream_002_off00002e95.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E95 22752 bytes
SHA-256: b12e04094596cc87100af4262b801773d7487134d79dd18305c064fa78d939e1
font_01_sfnt_off000061a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 19508 bytes
SHA-256: 65a9ed9569867c93404d2fdbc9ced28b29c50339cb7733397f651674d94c4a63

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