Malicious PDF — malware analysis report

Static analysis result for SHA-256 241df62ae9d8a8b3…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 19:10:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9dee4109e9d9ce0377bff15c04223978 SHA-1: 992db3e6006ecec378269c9b3e470f50436c4f95 SHA-256: 241df62ae9d8a8b3bae33fa2310c68365d4e888d9491a80ded71c35111c49756
160 Risk Score

Malware Insights

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

This PDF document is designed as a lure, presenting itself as a 'free generator' or 'game hack' for Robux. It contains multiple links that redirect to malicious infrastructure, specifically identified as a known malicious redirector. The document's content and the embedded URLs strongly suggest an attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-robux-codes-2021-game-hack In PDF document text
    • http://ghi.dk/billeder/roblox-free-robux-xbox-one_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/omfg-roblox-hack-script-nrpg_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-without-verifaction_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/how-to-get-robux-hack-without-human-verification_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-rich-roblox-accounts-discord_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/mm2-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-cookies-for-hacking_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-jailbreak-hack-july-2021_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/download-the-free-robux-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-roblox-game-scripts_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/freed-plugin-roblox_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/hack-para-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-necklace-free-shipping_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/hack-promo-codes-roblox_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_off00002db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB9 22196 bytes
SHA-256: 6657a651eaa5abc67710031a61ae65d3ee5487d13cf2d0f0ca08d7ec0a1b3c44
font_01_sfnt_off00005f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F02 19560 bytes
SHA-256: 23fd6b1887025421e6e39521b650ee02de163ea1ebb303fc14ef8bd616b7f3d5

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