Malicious PDF — malware analysis report

Static analysis result for SHA-256 922c3c2c9958c0ad…

MALICIOUS

PDF

38.2 KB Created: 2021-07-03 13:22:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 4c0e80bc623494cb1807a9193b5c0099 SHA-1: bbcb9c765234693d728d7177b0d680cb3e7319b3 SHA-256: 922c3c2c9958c0ad14bb64682cce7bcf40b8753d61003657de2d86566cdb925c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, specifically for Roblox and Coin Master. It contains embedded links that redirect to malicious infrastructure, as indicated by the 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristics. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/prison-life-roblox-hacks-game-hack In PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-cheat-engine-esp_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-admin-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/nbc-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/open-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-the-guest-body-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-codes-for-the-floor-is-lava-roblox_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-inspection_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/hack-pour-obtenir-robux-gratuitement_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robuxrar_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/minecraft-java-account-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
font_00_sfnt_off00003daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DAF 22916 bytes
SHA-256: 27b9ecac1abc58806fcc3ccc206f6860060e18d87099a31f18d5a96a0fa7df78
font_01_sfnt_off000070f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F1 18932 bytes
SHA-256: 7154e8ec889d39627137a3fd521bce7bdbf30f868b3ae2205afea64137aee9d8

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