Malicious PDF — malware analysis report

Static analysis result for SHA-256 43bcea69f96ce487…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 02:34:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fb948de02ef5fbc10c2783076a50f6b5 SHA-1: 7494524e8f3756f2170fd39118cf8efa9fe1cc96 SHA-256: 43bcea69f96ce48768197e4a67183f2d386949be12991ab93724698304273078
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 at http://netcdn.co/app/431946152/free-robux-generator-no-survey-or-verification-game-hack. The document body and heuristics indicate a lure for free game currency or hacks, suggesting the intent is to redirect users to potentially malicious content or phishing sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/free-robux-generator-no-survey-or-verification-game-hack In PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-latest-version-free-download_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-tiktok-followers-and-likes-no-human-verification_GM835599320.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-cheat-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-pretty-looks-on-roblox_GM431946152.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_off00003073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3073 21824 bytes
SHA-256: 5360c94ba936e47690be2a54cda13a5d3c0437684f359d96dd594742c440fe16
font_01_sfnt_off0000607c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 19368 bytes
SHA-256: 95b9d1297c530edf0fd86de2554d79382814e67c1a6ce1e60e57a1d6ac2d2458

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