Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f711175a4d1826…

MALICIOUS

PDF

35.7 KB Created: 2021-07-08 05:55:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 196e5e1561e96c71dc451f400629ec76 SHA-1: 474b90725cd33640e38dd3a3971fe3d824396731 SHA-256: a5f711175a4d1826ef93b2e471a54b87d971d5e0ba661f7134dd55625a46847c
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/hack-the-game-coin-master-game-hack PDF link annotation
    • https://htdvn.com/public/upload/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-generator-tool-download-link_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-free-xbox-packages_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-generator-no-robot-verification_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/pokemon-go-free-accounts-2021_GM1094591345.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/best-free-roblox-catalog-items_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-roblox-membership-codes_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-cards_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_off000034be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34BE 23108 bytes
SHA-256: 1478ee6c148c909979179c0edeaa30b8b418acefaf17f82b9e025497b08de384
font_01_sfnt_off00006893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6893 18428 bytes
SHA-256: 51a0c449eaa86980a1dd870200fb645f17238fc71baeb716fc22b8a77d6de95e

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