Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff41a2d2f935c1b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-01 12:38:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1584fc4e9f64a91b2f2123d893a2244f SHA-1: 0cd19a18b8406650eb05d9dd0fd5c703eec7f08e SHA-256: fff41a2d2f935c1b34b7b835b08d971bf13f68235e80e773ce3698c1ded15644
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious redirectors and hosts further PDF files, indicating a phishing or scam campaign. The primary lure appears to be related to game hacks for Roblox and Coin Master. The embedded URLs suggest a multi-stage attack where users are directed to download additional malicious content.

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/silent-assissin-hacks-roblox-game-hack In PDF document text
    • http://falconshipping-uae.com/userfiles/files/robloxcheatnewcom-hack_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-promocodes-hack-2021_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-hack-week-mirror_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-hack-people-acount-in-roblox_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-uno-script-hack_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_off00003250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3250 22204 bytes
SHA-256: 21af4ecb5f71a3d152fe4fe472242d984f99a9cfde28644ea1d0c18108d1ac84
font_01_sfnt_off00006365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 18880 bytes
SHA-256: f02620431952541ef8f554a677b8ef90acc13cb6192818917c0d4b535d92c1ac

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