Malicious PDF — malware analysis report

Static analysis result for SHA-256 f470b680c19f043e…

MALICIOUS

PDF

42.0 KB Created: 2021-05-12 02:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 867cd33eba3055eea554fefb15c28ee6 SHA-1: ee220e7092bee7d345807d20df9a94eefd59cc1e SHA-256: f470b680c19f043eb44f6f1b90d94df63494c67b33b5e5bb22a636f7d990f087
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, specifically promoting a "Coin Master Hack App". The document body and heuristics indicate a lure for a game hack, which is a common pretext for phishing or malware delivery. The embedded links are the primary indicators of malicious intent, directing users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-hack-app-game-hack In PDF document text
    • http://scuttworksdesigns.us/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B81 24080 bytes
SHA-256: 6f97fcb23d2f528351fd1a047a5bd9f657664644f998b6a478b9f8b979395f1f
font_01_sfnt_off000082b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B1 17892 bytes
SHA-256: f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64

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