Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d00ae514c389be…

MALICIOUS

PDF

33.8 KB Created: 2021-07-08 00:39:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 0a0ee599b1db8d494cfaa391c1a98c56 SHA-1: ff58a8ccfc4b4f7085f448a61c7f9ceecdd32656 SHA-256: 92d00ae514c389be99148ee113037bfc444b05a3b9068d0ed1aee01d6d89637c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The primary lure URL is http://netcdn.tw/app/431946152/free-robux-not-fake-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt designed to lead users to potentially harmful 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.tw/app/431946152/free-robux-not-fake-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-weight-lifting-simulator-cheat-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/clicksfly-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/passwords-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/follower-generator-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/2021-free-robux-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/top-10-mejores-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-race-track-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-cb-ro-hack-download_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-coins-coin-master-link_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_off00002e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E67 21968 bytes
SHA-256: 568f39ba12f394d54b5d0080ead06c52c6c54152a6049a974c1970570e4cc021
font_01_sfnt_off00005f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F27 18992 bytes
SHA-256: e4ac39d57ff956450bb8dd48df15acc1078399c4d14e18067568ebfa6ae85f6b