Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41a2dd49ac09f26…

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 17:50:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 11f2ff7e09dd73fd7c9c9257fa9aa857 SHA-1: bad3fe17ec7943986531dd77d560431ee1204ac7 SHA-256: f41a2dd49ac09f2624a450ceef0b7938d1f9c47162941680017f6fe470fb73b8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/coin-master-free-spins-without-human-verification-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-by-changing-the-code_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-admin-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-speed-hack-2021-june_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-speed-run_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-make-a-shirt-on-roblox-2021-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/do-you-want-free-robux-get-unlimited_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/nuevo-hack-de-robux-2021-funcionando_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-item-command-consle-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-accouts-that-work_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
stream_002_off00003502.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3502 22772 bytes
SHA-256: 1acedbec1ba28800db0c6700c7af4a3ea44feaf0c05e885cdb02892b651c7990
font_01_sfnt_off000067f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F4 19072 bytes
SHA-256: a1a0b1ab0678d2e7370b26dea7cb70dd1820c23c6d3f0d70e66f9be1cb5732f9

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