Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c878c795e1116d…

MALICIOUS

PDF

41.2 KB Created: 2021-05-17 18:37:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 404cda997d72fd66efecbe28e37060c3 SHA-1: 131b61b5157056f0ba7caf60b4fc6ffa5bf7f51e SHA-256: 57c878c795e1116d4069045305a90183b75b4585610d0658e5f4092ab98c9996
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 0.9971

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/406889139/coin-master-hacks-for-gold-cards-game-hack PDF link annotation
    • http://fa-deco.com/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://fa-deco.com/images/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/roblox-earn_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/robux-2021_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00004617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4617 25460 bytes
SHA-256: 72227afc3f7ffaa51627af1863bad489b1ab1a984a5c244cdd2062ae78cad054
font_01_sfnt_off00007f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F05 18128 bytes
SHA-256: 92f67a8595df518c209bc74471438c0bfca827f3a9f1725b2b2b65898affb2c4

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