Malicious PDF — malware analysis report

Static analysis result for SHA-256 942d7d1451f7174f…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 06:27:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ace00048fa3dcd139e77480aa9af331b SHA-1: 203c985ae753dd01a5f2c12149e64ed1edf68ccd SHA-256: 942d7d1451f7174f6c3bfa763dc0426b11ba32e018bd1451f86b87f420dbcbbe
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, masquerading as free game hacks for popular titles like Minecraft and Roblox. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-windows-10-free-game-hack, which is flagged as malicious. The document's structure and embedded links suggest an attempt to trick users into downloading potentially harmful files or visiting further compromised sites.

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/479516143/minecraft-windows-10-free-game-hack In PDF document text
    • http://librarystkippgribl.com/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/claim-your-free-roblox-card_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/robux-hack-ad_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/open-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-apk-download-v1-144-2-free_GM479516143.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_off000032ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32AC 22032 bytes
SHA-256: dce5d65419daa8050879736f8f8a957b86295572837c9641bdbd0c6c52a7c003
font_01_sfnt_off0000633d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633D 18812 bytes
SHA-256: 64384bfcc58c1bbdf03ee3f883a0be16d7cce96ae7e77f1df9d799b764379cfd

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