Malicious PDF — malware analysis report

Static analysis result for SHA-256 5411cc10b6eaef3c…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 11:51:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5609583abed9739259098071e2a72ebb SHA-1: d0323eb79f48f83df9d54dbaad893fc3adf12a0d SHA-256: 5411cc10b6eaef3cf80e06d995001e83d68311a008a2b70c834e42e3ece2bee2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, disguised as a lure for free Roblox accounts and in-game currency. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing or scam campaign.

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.tw/app/431946152/free-roblox-accounts-with-robux-that-work-not-banned-game-hack In PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/iluminate-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/case-clicker-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-free-event-items_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-any-item-for-free-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-don-t-need-to-download_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-fight-the-monsters-hack_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-mania-get-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/cheats-roblox-counter-strike-wallhack-aimbot_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-ro-hacks_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-theme-park-tycoon-2-cheat-engine_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/get-free-bird-toy-code-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-links-free-spins_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_off00003354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3354 22020 bytes
SHA-256: 4c5214a1f5fba7930ff1a016fc7d35151a070d905d763806fd7a61c95e0498a6
font_01_sfnt_off000063ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EA 19720 bytes
SHA-256: e7aa0a474f873a6e751f5083720d35e515444fa97241f03d9058db0775c81672

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