Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00475792b116584…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 00:22:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 64093b7f628cf5235d555b056f714968 SHA-1: 3a9cd505918a384d72bde4cd2bf81e36f73df76b SHA-256: f00475792b116584d40a840ef11f581db83bfd6bc8963b29791aac896c294c2d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically designed to lure users into clicking on promises of free game currency or hacks. The document body and extracted URLs strongly suggest a phishing or scam attempt, likely leading to further malware downloads or credential harvesting. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/406889139/como-generar-coin-master-free-spins-game-hack In PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-inspect-element-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-phantom-forces-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-hack-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/youtube-ninja-animation-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/get-minecraft-windows-10-free_GM479516143.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
stream_002_off00003107.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3107 23068 bytes
SHA-256: fc1de7ff4f66ca04f0eb4768bd9f71299879bfdc63a76fb2f53894e0741531ea
font_01_sfnt_off000064d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D0 18432 bytes
SHA-256: 74c7be9cac45eb0624d02f0bcdb00c8d8e7b4dc028bb1348c6e4e3a908da1083

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