Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c6cae4cc7ded5d7…

MALICIOUS

PDF

49.1 KB Created: 2021-04-28 07:19:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 066b7e51344524af10c154637b703870 SHA-1: c802ababaade0c83846ab4b07f5e0ad1cc99be78 SHA-256: 5c6cae4cc7ded5d77fd57405c4e1d96bfa892f793275561f92b5669ee68d0c8a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, leading to websites that promise game hacks and free currency. The document body and heuristics indicate a lure for free game items, which is a common tactic for phishing or distributing further malware. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

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/431946152/infinite-health-hack-roblox-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-a-free-skin-in-strucid-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-roblox-money-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-robux-urban420-network.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/80-robux-for-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-the-right-roblox-account-pin-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-ninja-animation-for-free-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-in-to-builder-mans-acount-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-robux-promo-cides.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-hack-generator-no-human-verification.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-lvl-7-script-executor-free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000472e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x472E 25940 bytes
SHA-256: 0394acd199ca4c51febb51a53ff2232d6b0a589cd0026630d5fd61184e4ce050
font_01_sfnt_off0000828f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828F 11440 bytes
SHA-256: 154d59d1680f2d1e38ccb783d6997f344290d121007e51df331726de4128c12e
font_02_sfnt_off00009db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB0 18572 bytes
SHA-256: 10a064bdc5365b6f142fef24c1e5865fbbadacfa7031961d43c9e4c15451c5e1

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