Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cce6fa1ec567d5…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 14:38:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 53313a3e1f656c57b0e529d2b9ffb93d SHA-1: 97fe5eca23ac29b565ec8b9158d12ea98a51b56d SHA-256: d3cce6fa1ec567d52b470a34ec2195ef9afbe2406e5eab4bdd00f37221e07692
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to game hacks and redirects to a known malicious URL. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the nature of the lure and the embedded URL suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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/how-to-cheat-on-songify-roblox-game-hack In PDF document text
    • http://lib.kunci.or.id/repository/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-gift-card-20210-robux-codes-2021-aug_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/comment-avoir-des-robux-gratuit-freerobux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-cheats-proxy_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/did-momo-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-how-to-get-private-server-for-free_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/hacker-roblox-shirt_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-hack-mobile_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/robux-hack-exe_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/robux-generator-hack-2021-xonnek_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/hackear-robux-en-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/androeed-ru-roblox-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_off00002ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA3 22556 bytes
SHA-256: 0af0ec80d2b79b82611bd28d90168eee5286a68f79b6bba498a1c8f922d87e5c
font_01_sfnt_off0000603a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603A 19220 bytes
SHA-256: 42a822517b43257e5acf8002c818709c3dac06f269c49dbff95264fe02e1da7c

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