Malicious PDF — malware analysis report

Static analysis result for SHA-256 6773276447b96a1a…

MALICIOUS

PDF

34.1 KB Created: 2021-07-09 15:58:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 217b52e835fe70388c9ddba5c30fe56f SHA-1: 97e0f16d130d8f6bdb96cbebfeba88e956b92a99 SHA-256: 6773276447b96a1af27869550700f30935f6ad9913a4339104b510d199ccf8a0
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/479516143/free-minecraft-hacks-game-hack PDF link annotation
    • http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-gift-card-codes-2021-feb_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/gain-robux_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-robux-generator-tool-2021-robux-hack-robux-free_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-free-gamepass-script_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/robux-hack-with-phone-number_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-greasy-fork_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/free-super-happy-face-roblox_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-admin-command_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-hack-co_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_off00003209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3209 22356 bytes
SHA-256: 559dd254ef972bcb4135997bedbb32d478780591ddfa4efa74576c2eac206b5d
font_01_sfnt_off000063a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A2 18024 bytes
SHA-256: 8f8fda7ec61391a8021437fea0b23093d98da4680992c9daa6c8728c6d82e4f2

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