Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7aa787f9e4b023f…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 12:08:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 046d521072e02ded878e671194d19ba6 SHA-1: 184b4018f7ea64f0cbec9ac31d97bff0e37fdb46 SHA-256: e7aa787f9e4b023faaeb16f5ceb42c129dd3dbd688ffacc0cf4370a7e80aaad6
160 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, masquerading as a 'free generator / game hack'. The document body and heuristics indicate a lure for game-related cheats, likely to download further malware or phish for credentials. No scripts were extracted, but the primary attack vector is the malicious redirection URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/431946152/how-to-get-free-robux-with-no-verification-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E73 25720 bytes
SHA-256: d1a4e60c461c3f00e5ba9ea3306e300fefbcb391044ddcb53cb5f3620418ae3c
font_01_sfnt_off0000885c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885C 2844 bytes
SHA-256: d4efd49219a7ff6424c923a6ccef5b7e1750ded18bbd79546f2ad196ddc76c43
font_02_sfnt_off0000921b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x921B 19128 bytes
SHA-256: acb72b37f9b0a7ac0fa23716fb81d4af9379ab539551c05381b29cd372bdbe33

Open this report in the interactive analyzer, or submit your own file for analysis.