Malicious PDF — malware analysis report

Static analysis result for SHA-256 c800b0f6a55447b8…

MALICIOUS

PDF

43.3 KB Created: 2021-05-11 23:32:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b8b05c3b1eaa82127b6254578038cbd0 SHA-1: 30e4e9dba5ff68bc4004bdb7c82b43bf847b6aa3 SHA-256: c800b0f6a55447b84d9a8b57604432babd9373f864c049b6e7cadaa3d4120d9f
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, masquerading as free game currency generators. The document body and embedded URLs suggest a lure to trick users into visiting these sites, likely to download further malware or engage in phishing. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-heaven-free-spins-link-2021-today-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c72.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C72 24548 bytes
SHA-256: 2efaacf9dc4fa255f8eac2a107d41b18a96fb3bb848501aa97e2ddd71089350c
font_01_sfnt_off000084d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D7 18928 bytes
SHA-256: 6c02eefe1d6ccefe48eb04d1ff5bd485ce1aa9bd94615c823ea62003c3b46c2b

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