Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff26a1f9f4205ca…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 09:29:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d49f0a4a6b8305053eb1a37d9de49513 SHA-1: 4f1d0942a34950ac2167ad5304e6a9d30d31192f SHA-256: 3ff26a1f9f4205ca9d0e93682527c8226acd6d9132af4474ba3fac9af443e255
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.co/app/431946152/proof-how-to-steal-hack-accountson-roblox-get-free-robux-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-live-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-promotion-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/master-coins-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-verification-easy_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-gamepasses_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/brand-new-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-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_off00003031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3031 22364 bytes
SHA-256: 12d92799d009b4ad6dce06e0872c2d37e82f0a86589d9f6c406ad7342a835f3d
font_01_sfnt_off000061ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FF 19380 bytes
SHA-256: 9ac27a4c6b14bd4d50523df92545d470c09235889560cd5f91b171de74f08e11

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