Malicious PDF — malware analysis report

Static analysis result for SHA-256 b720cac73fd78274…

MALICIOUS

PDF

31.7 KB Created: 2021-07-03 15:42:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 222dfa36ec8b5fa754cf8a423f89d02f SHA-1: 62fc0c9dd00f9737c15046e7397713d85978a7ed SHA-256: b720cac73fd782745dace58326aa05c08e0ae6f26ef085b029bef2c16ae7a401
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that is identified as a lure for game hacks and a known malicious redirector. The embedded URL, http://netcdn.tw/app/406889139/free-coin-master-spin-app-game-hack, is directly presented as the malicious destination. This suggests the document's primary purpose is to trick users into visiting this URL, likely leading to further malware downloads or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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/free-coin-master-spin-app-game-hack In PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/apoculopse-rising-roblox-hack-script-spawning_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-mobile-games-roblox_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/20210-robux-promo-code-free_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-free-ssscripts_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-hack-all-game-gun_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-robux-no-waiting-on-phone_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-mining-simulator-hack-script_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/robux-now_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/is-tiktok-free-on-android_GM835599320.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-police-shirts-for-roblox_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-become-a-hacker-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33E1 23188 bytes
SHA-256: 12af136836dfcda293b8c725be1f0807bfd9824826104d9512fc1f72cf0dae6d

Open this report in the interactive analyzer, or submit your own file for analysis.