Malicious PDF — malware analysis report

Static analysis result for SHA-256 6857d92ac0cab49e…

MALICIOUS

PDF

36.1 KB Created: 2021-07-01 20:18:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7c09b8048900fd454097a065fa68af79 SHA-1: e3958f77b6fb7139fe7f0cb558f62df77f9d9a68 SHA-256: 6857d92ac0cab49e3ec082b54898a9858af25a4d5e109022756173cee4a658a5
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that mimics a guide for hacking online games, suggesting a lure for users to download malicious content. The heuristic firings, particularly 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS', strongly indicate malicious intent. The presence of a 'download button' lure further supports this. No scripts were extracted, but the document's structure and content point towards a phishing or malware distribution attempt.

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/how-to-hack-roblox-using-cheat-engine-6.4-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/how-do-you-hack-apocalypse-rising-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-unlimited-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-someone-easy-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-easy-fast_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/lyce-de-roblox-2-hack-directeur_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-way-to-give-robux-to-friends-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-for-mac-roblox-safe_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheats-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-dop-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/get-free-robux-quick-and-easy_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/arrest-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-bubble-gum-simulator-cheat_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-phantom-forces-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3395 22768 bytes
SHA-256: 9012b3f073814d165e5c3f08e492183abd0d7fcd5e9255d08edefc1371fbf8cb
font_01_sfnt_off000066c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C2 19504 bytes
SHA-256: 0c57ce077c89508704d6d6d362339e3a7babd3fe85761b154b9e1204810500f7

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