Malicious PDF — malware analysis report

Static analysis result for SHA-256 22053e9ceb157fc7…

MALICIOUS

PDF

35.5 KB Created: 2021-06-20 12:35:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: bddf1c6469bad73191628c65841c43b1 SHA-1: 0ff5bb272cff9edc2640ebe6c48aa077838e1805 SHA-256: 22053e9ceb157fc7498660de16ae6486729aaa88919c3d52a3cac398dfd29064
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to websites offering game hacks and cheats, such as 'Roblox Jailbreak Hack Client Download'. The heuristic firings indicate that the PDF links to known malicious redirector infrastructure and is part of a link farm designed for SEO manipulation. The primary lure appears to be related to obtaining free in-game currency or hacks for popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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
  • 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-jailbreak-hack-client-download-trackid-sp-006-trackid-sp-006-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-naruto-final-bond-ninetails-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacks-for-blood-flow-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-games-with-no-anti-cheat_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/tiktok-free-video-download_GM835599320.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/dinosaur-simulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-on-god-simulator-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-accounts-on-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-accounts-with-pins_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-do-u-get-free-robux-2021_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_off00003014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3014 22472 bytes
SHA-256: 0e33c593c5b843ced4b6a979f772a8082f899667ab1595448887211a48a3ac0d
font_01_sfnt_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 20104 bytes
SHA-256: 7c5d67aeffab0a7016220422536fc6c1e1691c87cb7e23a63e9a27ab62c40bbe

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