Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee789d5c89c087f…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 02:08:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f60479266947127cdcf502e542cd2df7 SHA-1: 47b6ea746d15cdcb5899ca30a2f7e89917b6c454 SHA-256: 2ee789d5c89c087f0aeb766a22918ede523adebf64efe03188e3d9c8d6f3f7ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, masquerading as a game hack generator. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links confirms a malicious workflow. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure users to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/spin-rewards-coin-master-game-hack In PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/robux-hack_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://www.myeresults.ng/ci/userfiles/files/coinmaster_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_003_off00004998.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4998 24464 bytes
SHA-256: 8478b77c65bb6d3e1cddc4ebcdd389686686e5fbd5f1f2c8e4980b3ae5eb7dd1
font_01_sfnt_off00008100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8100 18060 bytes
SHA-256: 628a46f82764ac3e3d0c04e056b2a944aa1793d97516e60b3531d1bdfbd125df

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