Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f2500e61fc7547…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 22:00:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 774926cc02a3a50e0150b959ef980d10 SHA-1: b63f65631b8d9ee8bc1f07239b1b1af5b73e5f28 SHA-256: 32f2500e61fc75475b698f46aa67fe8887ae8b66d87da10f6a36812ab30eb3c0
160 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically advertising game hacks for platforms like Roblox. The embedded URL http://netcdn.tw/app/431946152/roblox-admin-hack-game-hack is identified as a malicious redirector. The document body and heuristics suggest a lure to exploit user interest in game cheats, likely leading to further malicious content or downloads.

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-admin-hack-game-hack In PDF document text
    • http://library.unissula.ac.id/fk/repository/comment-hack-roblox-en-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/do-you-get-free-robux-with-builders-club-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-fly-with-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/cheat-engine-64-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/flobfun-robux-gnrateur-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hacks-para-roblox-2021-octubre_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/cheat-engine-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/speed-run-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/best-free-injectors-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/spin-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_off00002ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED3 21888 bytes
SHA-256: f5c047a274ba5859f4a73054bad241bfe71d64d8506f2aac921415b9bcfa1c79
font_01_sfnt_off00005f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F36 19208 bytes
SHA-256: e5ca730804d66bebf4e5e52c5751bcc2b57707170b28c3b0ce40a6afaace4474

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