Malicious PDF — malware analysis report

Static analysis result for SHA-256 24131f69700e7891…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 15:21:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ea97a20f3b82e36d69b05ef6aa6e1221 SHA-1: 814c2904b57d21937de579d62e80f7322bb0a3f0 SHA-256: 24131f69700e7891805d382edea0bbfffb570925bf105234e18f1c516878c4dc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link that acts as a lure for a 'game hack generator', which is a common social engineering tactic. This link redirects to a known malicious domain, indicating a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious.

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-spin-rewards-game-hack In PDF document text
    • https://www.jcn.co.uk/uploads/files/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-images_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/getrobux-come_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-devil_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-get-free-robux-on-ipad_GM431946152.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_off0000500b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x500B 24404 bytes
SHA-256: 44be7103d9a9e0ec79bd5f595bffb2a2fb319398ba73ddc8bfaadfe6538c242e
font_01_sfnt_off00008824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8824 18060 bytes
SHA-256: 32fee5950823ac81505100a91edf6b1b5c1c3bb2ed46d6e4cd5c73ff58bb8f33

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