Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a487b0ce197ac5…

MALICIOUS

PDF

35.9 KB Created: 2021-06-30 10:49:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 02b62bbc873ac9c2d19ecf73ff12cb42 SHA-1: 3a2a431d46727ade9fa5014f728ea94f41a9546a SHA-256: c5a487b0ce197ac521943f24cdb3da946cb69ac39e31976d19f39677fd243e6c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators. The primary lure appears to be related to 'Roblox Money Hack Script Pastebin'. The document's structure and embedded URLs strongly suggest it is designed to redirect users to potentially harmful content or downloads. No scripts were extracted, but the heuristic firings indicate a clear redirection and lure pattern.

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-money-hack-script-pastebin-game-hack In PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-outfits_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/farm-world-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-online-games-similar-to-roblox_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/roblox-new-monstersimulator-hack-script_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/the-free-game-roblox_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-sin-codes_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://www.roblox.com/.IIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000336f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336F 22444 bytes
SHA-256: 5f5d0afd36355868e5c1ecee566337c56a373a786e3b838661abdfdc889d3af8
font_01_sfnt_off00006598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6598 19588 bytes
SHA-256: 0cfb2f74cf78933e3cab50367402d499065b4e79b50616c7e2e64c6965a6fdb4

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