Malicious PDF — malware analysis report

Static analysis result for SHA-256 7590f2296cead62f…

MALICIOUS

PDF

34.9 KB Created: 2021-06-21 13:11:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e5cde3cdac95255611c4550dc696049f SHA-1: ab66c89af1b121c065017b25e66e583cb6785718 SHA-256: 7590f2296cead62f037f698a91264c0e414954b5aac1599fb19383a775529d1b
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics indicate a lure for game hacks and cheats, likely intended to trick users into downloading malicious software. The primary malicious URL identified is http://netcdn.co/app/431946152/download-roblox-pc-windows-10-free-game-hack.

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/download-roblox-pc-windows-10-free-game-hack In PDF document text
    • http://alcomet.ru/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/evry-thing-on-the-roblox-caolog-free-fast_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-make-a-custom-rthro-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://alcomet.ru/images/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/play-kill-hack-roblox_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-get-free-robux-easy-on-ipad_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/why-cant-i-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-spins-for-coin-master-game_GM406889139.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_off00002f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F28 22344 bytes
SHA-256: e97aa99b8c6eff723f7c10bc5c0824d2cc42cc877d3692e11d029df615360dc3
font_01_sfnt_off000060e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 19908 bytes
SHA-256: 150d9b7cad0220e2b5e3de6db6e7619ed2ca41aee977c7ab52af5fc343847a71