Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c0c7a2a1776394…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 08:49:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8d9a7b5fa705a1fd3a6def83c2a3e429 SHA-1: 6d2584d99170e4369e21197c226a6802520dbf6b SHA-256: c3c0c7a2a177639445cb65743595b188160f9ea2f4f43b2b19909cad1bafd524
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and free item generators. The primary redirector URL is https://netcdn.online/app/406889139/coin-master-free-items-game-hack. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.online/app/406889139/coin-master-free-items-game-hack In PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/coin-master-app-free-download_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
stream_004_off000053a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53A8 32392 bytes
SHA-256: 1af3583f6bc872430e9f064393bdff0403ff99d661f7d534d550a98d42b974d4
font_01_sfnt_off000096cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96CD 17968 bytes
SHA-256: 573beccbb9385faa7d237b72ffee946266096df963b3eebf5a3a94db09fd0704