Malicious PDF — malware analysis report

Static analysis result for SHA-256 8025214b59816751…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 13:12:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 98f5c845f60b324ef8cb4e719e003c49 SHA-1: 8d6af044ed8101e55d10e834bfc65c662c24e25d SHA-256: 8025214b59816751af9192db30745c4f8b0b9f2788193dc63b062878673d9f8e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external websites, including a known malicious redirector, that promise game hacks and cheats. The document body and embedded URLs strongly suggest a lure for users seeking advantages in games like Roblox and Coin Master. The presence of a malicious redirector indicates a high likelihood of leading users to further malicious content or phishing 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.co/app/431946152/roblox-assassin-aimbot-hack-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/admin-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-pain-exist-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-hack-working-2021-inspect_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/money-hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-admin-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-do-u-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-roblox-2021-august_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-cars-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/pastebin-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/simple-hack-com-roblox_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_off00002ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDE 22400 bytes
SHA-256: d35aff9e2d32b77756b25453b4fb9ba3bdbee21ca92cd47b125def8c3847fc53
font_01_sfnt_off000060e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E0 19140 bytes
SHA-256: 6c40a14eb380bd5a63719f39e646a94fb0264b18c11dcd10958435c70c3691af