Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4f6efa31f99f06…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 15:21:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 926dacf6ac06614ea6822f4756e7e8fd SHA-1: 69483ca6cc4e2a0468e4dd0b4cad6ff4f47b0073 SHA-256: 9f4f6efa31f99f065e386531b9c0fc35cc33caed5a416dd140d65ef11d9e1892
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, which are common lures for malicious content. The primary link directs to a known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to further malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/roblox-adopt-me-hack-game-hack In PDF document text
    • http://librarysenior.com/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/tiktok-free-hearts_GM835599320.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/install-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/5-games-that-give-out-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/my-roblox-account-got-hacked-ant_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-cheats-jailbreak_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/rxgate-cf-free-robux-redeem_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://librarysenior.com//repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/static-moonactive_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/static-moonactive-net-link_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
font_00_sfnt_off00002f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F10 22472 bytes
SHA-256: 0297e6a6b3812922190921bbf7c750e018db811bc2510cdb44bb75e774daa1d5
font_01_sfnt_off00006128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6128 19308 bytes
SHA-256: 1d6d529828a603e65e14b6285156acac3d11e3a25e7a00ad8dd7aee01cb73554

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