Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a70c28f0433155…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 06:32:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 802ad64cad44b831ba9edcbec77d2981 SHA-1: e6f95fac9f01513be5cf9515c9ed9ebe3a2e62fc SHA-256: 54a70c28f0433155f6a93b280c49769acfe9e11337c20bbd21c4dec99dff56ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game resources to trick users into clicking malicious links. The primary link, 'https://netcdn.online/app/406889139/coin-master-free-spins-link-blogspot-2021-game-hack', is identified as a malicious redirector, likely leading to further malicious content or malware download. The document's structure and embedded links strongly suggest a phishing or social engineering attack aimed at driving traffic to compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-spins-link-blogspot-2021-game-hack In PDF document text
    • https://www.repository.ptiq.ac.id/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/pubg-uc-buy-free_GM1330123889.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-hack-2021-no-human-verification_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_off00004e12.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E12 24520 bytes
SHA-256: 8956babb1de28f015aee4bd18414854bf4cf683058faf4ea1a86501e04dde789
font_01_sfnt_off0000864d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864D 19036 bytes
SHA-256: a1db0e26d638f2546736f1f7b434dee98a1c5e726f40723477b7c203db66759e

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