Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c541bf1185c739c…

MALICIOUS

PDF

47.0 KB Created: 2021-06-10 18:34:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 265f2d8d1b76db40c110e4bf366ae62f SHA-1: 2940ff3198cd2324641fe24862f25a3b3ca5d82f SHA-256: 6c541bf1185c739cfdc77c374e8421ea66ef77a113482e5133b56421242801fd
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 0.9832

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 https://netcdn.tw/app/431946152/how-to-have-free-admin-in-roblox-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-picture_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_004_off000051cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51CC 28760 bytes
SHA-256: 8c71df7d9b15fc45b885bf7d28c2cb05c712c83f2e85b2f892b790992b4b4112
font_01_sfnt_off00009341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9341 19008 bytes
SHA-256: b73f35328f9c6a6e8453ff297b8eb5baf2c94e26c3eb19f4c6b8c8ea92ce78b1

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