Malicious PDF — malware analysis report

Static analysis result for SHA-256 6804fd86d1404ca3…

MALICIOUS

PDF

43.9 KB Created: 2021-05-14 21:14:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 41a30fbf9411583f49616f1aaf6170c9 SHA-1: bd574e355b3f1125c0c396aa483eef2e2a66c7d6 SHA-256: 6804fd86d1404ca34b88a86d1cbcf9a1472b38256633f2e9ddddf9a49ad65041
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free Robux' and 'game hacks'. The primary lure URL is https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-doing-anything-2021-game-hack, which is associated with a high-risk score. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-robux-without-doing-anything-2021-game-hack In PDF document text
    • http://safari-crimea.com/images/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-generator_GM431946152.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_003_off0000489f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489F 26160 bytes
SHA-256: 6fb275531d4e0e3a902530757e9338cba05d4c515ad05273f090c967fb872d00
font_01_sfnt_off000084d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D0 19804 bytes
SHA-256: 7de61e10f8b36a8651a25a8843179e8b1ecc4bebcf46d2f81f98618caa29dc1a

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