Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cddcc67a02cbe98…

MALICIOUS

PDF

35.8 KB Created: 2021-06-27 16:27:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9f2dcb004cf961df7598f6eaebfc18b7 SHA-1: 0a8442fbe0d681c5b0a1338d016dbcc6e1cbe38f SHA-256: 6cddcc67a02cbe98841fb31e32c8d135a733426ac1d5f3b8bc3121168eb9354e
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free generators to trick users into clicking malicious links. It contains numerous links to redirectors and SEO-optimized PDF files hosted on external domains, indicating a phishing or scam campaign. The embedded URLs are designed to lead users to potentially harmful content.

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-pet-simulator-lua-script-hack-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-inject-a-hack-into-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-be-a-hacker-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-survey-or-verification-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-hack-2021-november_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-websites_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-followers-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/gengreating-free-roblox-redeeem-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-promo-codes-2021-november_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-online-hack-link_GM406889139.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_off00003299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3299 22820 bytes
SHA-256: 99dab99d9b2bd106de6ae44c0785806bf9403f5d47054e77c37a5e3355afb2e1
font_01_sfnt_off0000653f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653F 19612 bytes
SHA-256: 57731a541bcd7b1c7790c1a5e72f4206ed18aa72d29b7f47c771eaeea10bf828

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