Malicious PDF — malware analysis report

Static analysis result for SHA-256 f542b40faa9730aa…

MALICIOUS

PDF

37.3 KB Created: 2021-05-20 13:05:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 92dc35ff03b7f05357d3d43c44fad743 SHA-1: 7d37aa8cbac9c18f3f4fdc6f20c978afcf474d80 SHA-256: f542b40faa9730aa3f912430dadc0019aa4abbc0d43b1e08ae1883548caeadb3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, specifically advertising 'free executors for Roblox' and 'game hacks'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-executors-for-roblox-game-hack. The document body and heuristics indicate a lure to download a payload, likely through a malicious link. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/free-executors-for-roblox-game-hack In PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/free-modded-minecraft-server_GM479516143.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_off0000334a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x334A 27556 bytes
SHA-256: a55939c219091212675965c88eff67620b232e4764f759b2fdd18e21062088f2
font_01_sfnt_off000070c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C7 18192 bytes
SHA-256: 0010e8e9d3b2fa3a2033abb01eb6105ec98c225a2498b2eb90ac9377a6b08ddc

Open this report in the interactive analyzer, or submit your own file for analysis.