Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef6da1db843838e…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 02:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fe0b44f14e645e914729b2cb7d2a46b2 SHA-1: 12e916a05e01dd457878607d3cab3b613eee45cb SHA-256: fef6da1db843838ea476e929177a30205964eab325431714e0a528e1f57112da
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/free-robux-no-scam-no-human-verification-2021-game-hack PDF link annotation
    • https://library.iuli.ac.id/repository/cheat-pour-phantom-force-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-customization_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-promo-codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-promo-code-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/stinkywinkys-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/www-roblox-cheat-com_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-wall-hack-download_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-injector-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-hack-sheet_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 21664 bytes
SHA-256: 28057f74065a0f01f78cdc9904ad69e036c768378bf2483cc4b0bd22bf1aa6a7
font_01_sfnt_off00005f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F48 19736 bytes
SHA-256: d0fa3985788206ce80dc135eb9a88bb4811dc8c0f7ce50211ba701cf3128cb34

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