Malicious PDF — malware analysis report

Static analysis result for SHA-256 e611ef8213ad3fc3…

MALICIOUS

PDF

34.9 KB Created: 2021-07-02 07:14:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 41f9391dd5313e5e090f50fa6b16646e SHA-1: 93bd051eee222c2289d87fec1ca9f7c6243a9d97 SHA-256: e611ef8213ad3fc315aaabc7e3f2fc41f0eeefdc0eec4cf886cf817f899b1c23
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The embedded URLs, including http://netcdn.co/app/431946152/free-robux-discord-group-game-hack, lead to known malicious redirectors. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector chain designed to deliver a secondary payload.

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.co/app/431946152/free-robux-discord-group-game-hack In PDF document text
    • http://lib.untad.ac.id/repository/roblox-fly-hack-lua-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-make-a-free-admin-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-games-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/console-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/tiktok-free-search_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/claim-gg-free-robux-app_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-roblox-protosmasher-whitlist-code-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/is-there-a-free-trial-for-roblox-bc_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-everything-in-roblox-catalog-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-aimbot-free-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-gamepass-script-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-fortnite-simulator-hack_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_off0000316f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316F 22220 bytes
SHA-256: 2082a0db8849ca2582716464bcbfc1e953f5266ee9bc65856fc607ab228d6581
font_01_sfnt_off0000628d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628D 19356 bytes
SHA-256: c8ce6dac73e6556dab81df2a6d5ccec81aff5b9ff0275c5835f7172f76d0b7a7

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