Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e6f1919da54368…

MALICIOUS

PDF

34.9 KB Created: 2021-06-29 21:16:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f1da16e91021cbffa42fde898f5c1fe6 SHA-1: e45e2547d27656440b5d378a3736affc4de82eae SHA-256: 74e6f1919da543688e24d07e64d59cdf3b0962a618838820ca177f6ab4a5b59a
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a high number of external links, many of which are disguised as game hacks or generators for popular games like Roblox and Coin Master. The primary heuristic indicates a 'PDF SEO Link Farm' and a 'Game Hack Redirect Lure', suggesting the document's purpose is to drive traffic to malicious websites. While no scripts were explicitly extracted, the nature of the lures and the ML classification strongly indicate a malicious intent to exploit user interest in game cheats for potentially harmful purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-fnaf-rp-how-to-get-free-via-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/gun-giver-script-lua-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/tiktok-free-folowers-4tiktok-site_GM835599320.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-week-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-gg-codes-2021-october_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-roblox-hax_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-roblox-with-odium_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-anything-you-want-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-100-works-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-site_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_off0000303d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303D 22504 bytes
SHA-256: 9110771333e5159d0c7d7db05b8c315356e05dfd9fd0068b70ad2359bbc0c676
font_01_sfnt_off00006238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6238 19348 bytes
SHA-256: 24152c93b59fd7253680d0ed964b647d68369108e10815f18e97dfd04a37b2c9

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