Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6f011f12c41583…

MALICIOUS

PDF

43.0 KB Created: 2021-05-12 12:52:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 908f17a916cf2244abf50551f07c0378 SHA-1: 399f4658f769d3d9493862a1cd8316da634c08d9 SHA-256: eb6f011f12c41583fc9e20682c6b298f814399e07eda249433a230b1c6689784
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of providing free game hacks and items. The ML classifier strongly indicated maliciousness, and the presence of redirector links suggests an attempt to lead the user to a malicious site for further exploitation or phishing. No scripts were extracted, but the document's structure and embedded URLs point to a social engineering attack.

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/coin-master-free-spins-april-2021-game-hack In PDF document text
    • https://ethraa.ae/userfiles/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/mc-hacks_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-hack-review_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_off0000492a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492A 25996 bytes
SHA-256: ed12f3b05ee3348677e853586197aca156b4da954ba17ba92d1c9cb2f207e2bc
font_01_sfnt_off0000855c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855C 18360 bytes
SHA-256: 75c2431eb7abcbfba8583f9d3f7d96c752390eff12aa9241146852e88ad56508