Malicious PDF — malware analysis report

Static analysis result for SHA-256 0379e1ce7113f90d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 09:39:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d2caa748009358ac1124dfdd5933382e SHA-1: f402ee45326aeaae88237239b62e8af9b53b8714 SHA-256: 0379e1ce7113f90d9d5023598b7968d90541960097be544068e303504a36f60c
142 Risk Score

Malware Insights

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

The PDF document contains numerous links to websites that promise game hacks and free in-game currency, such as 'roblox-backpacking-hacks-game-hack'. This indicates a lure to trick users into visiting potentially malicious sites. The presence of a link farm heuristic further suggests this document is designed to drive traffic to these sites, likely for monetization or malware distribution.

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-backpacking-hacks-game-hack PDF link annotation
    • http://www.compusiteinc.com/images/hack-roblox-robux-code_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-cheat-engine-is-it-a-virus_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hack-codes-for-roblox-rb-wolrd-2_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-dominus-for-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-roblox-anime-free-shirts_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-hacks-for-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/dragon-ball-ultimate-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-hack-on-ios_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/cheats-to-roblox-jailbreak_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_off0000311e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311E 22348 bytes
SHA-256: 11fda9680d77cf1b888505f32a4029dca573d2da0c5f10627bf69dac75330442
font_01_sfnt_off000062d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D4 18952 bytes
SHA-256: 06603619854f5119cc3e719e4a815d9fbc636ac9192a6958b36c51248acc83f5

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