Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dbd982044da8860…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 05:30:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: af78fa60738415a0c2906daae9f4af8a SHA-1: 6c8bd610a4ea19b79512a34fbe723c9ac35f040c SHA-256: 4dbd982044da88603f3011f25608d94af34d30814f5b944decd915de7eab9aca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for game hacks and virtual currency, directing users to a malicious URL. This URL is flagged as a known malicious redirector, indicating a phishing or scam attempt. The document body and heuristics confirm the intent to redirect users to potentially harmful content.

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.co/app/431946152/glitch-to-get-free-robux-2021-game-hack In PDF document text
    • http://library.unissula.ac.id/fk/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-roblox-injectors_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-hack-on-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-twitter-codes_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-roblox-rom_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/tiktok-free-search_GM835599320.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-no-scope-sniping-hack-gui_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-builders-club-roblox-script_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/robux-come_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-gold-cards-free-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_off000030e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E7 22040 bytes
SHA-256: 4ab5997dc8e4ae5ca96473f730c3fac0286926a26a732c1ba493432f12ae4497
font_01_sfnt_off0000617c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617C 19580 bytes
SHA-256: e709761c2db6df0a760de8397c5d0aa5367dc73722e3f7e3c1850fbd682c0116

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