Malicious PDF — malware analysis report

Static analysis result for SHA-256 37139da39f104a11…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 20:16:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 98f31fb2107d27d4223fa206807e980f SHA-1: dbc59cf6757b548232b4a16f28a612c033160008 SHA-256: 37139da39f104a11b8373cecc4064a37ad7b33bfa099971175c25a29bae82be7
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-hack-apk-july-2021-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/cheats-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-shinobi-story-cheats_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hacks-robux-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-group-join_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-formum-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/grow-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/tiktok-free-tv-shows_GM835599320.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux_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
font_00_sfnt_off00002e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7E 22960 bytes
SHA-256: aa944f8bde90a6bdbd04bb38fbac03b3069b954792d0e6e6addde56a9a18fdc3
font_01_sfnt_off000061ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EE 19140 bytes
SHA-256: be5c43c74bc19b4a02d5512ddc471c16ecd3e0fd6fcc29a5737e08cb61c294c7

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