Malicious PDF — malware analysis report

Static analysis result for SHA-256 63739676a35777dc…

MALICIOUS

PDF

35.7 KB Created: 2021-05-22 20:07:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a8b22c301eafea2a22e9af16a28753aa SHA-1: 11dadec24a2358082364fc25c9f616d89906cba9 SHA-256: 63739676a35777dcfb632e6ef63724ed1edfbf29bed8058e987c37d99b72ccfe
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 0.9648

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 https://netcdn.xyz/app/431946152/free-robux-app-game-hack PDF link annotation
    • http://mycookingpot.com/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/get-coin-master-free-spin_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
stream_002_off00002ffd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FFD 25492 bytes
SHA-256: 7c836d6736b4234f6d8d194c781cf68ad6d0ab080c4875229603478bb305fbbc
font_01_sfnt_off00006a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4C 18192 bytes
SHA-256: b6ab7ec8c8ad827553cf0587115e299062cd48018093aec7e14a56fabc9ede42

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