Malicious PDF — malware analysis report

Static analysis result for SHA-256 e245feda2bf8b969…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 05:25:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9d3d4538017a13d16c865d9c6db9725a SHA-1: 6a2af95d2ee1ebaff3316a3d956e94043968ab6b SHA-256: e245feda2bf8b969f683c8d5a6f491f437ce2d27d0a9d4e9cd75aec7fc95276d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic firings confirm the presence of malicious redirector links and a lure for free generators, indicating a phishing or scam attempt. No scripts were extracted, but the document body and heuristics strongly suggest a social engineering attack to drive traffic to malicious 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/gamepass-buyer-script-roblox-cheat-game-hack In PDF document text
    • http://library.atim.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/discord-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-hack-scripts-android_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-items-on-roblox-may-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-forever-working-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-hacks-compatible-with-vantage-computers_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacks-para-mining-simulator-roblox-tokens_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-clothes-sites_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/generateur-de-robux-cheat_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robloxhackbalance_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-100-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-url-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/project-alpha-200-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_off000030a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A4 21772 bytes
SHA-256: d483f3d66ea87842cbb378d80418ee1a0411654e93347b5cdeae31ab7f1ef3e2
font_01_sfnt_off00006092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6092 19632 bytes
SHA-256: e6dd3bda57807ff2942a0ed69d756d7aa66e25d92747f22c5a92982779adbb81