Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a6d3b5ccfb3a8e…

MALICIOUS

PDF

43.1 KB Created: 2021-05-11 16:35:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 49d57d8a00cc3e44262c8f5fcab3d2e3 SHA-1: 83d97c0534f38f8a92ce12e902932e20e7270468 SHA-256: 96a6d3b5ccfb3a8e54b115cee37b26638c0056ceaf29b21e668dff5241ced919
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free currency. The heuristic firings confirm the presence of malicious redirector links and a lure for game-related cheats. While no scripts were directly extracted, the document's structure and embedded links strongly suggest it's designed to lead users to potentially harmful content or further malware downloads.

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/links-for-free-spins-for-coin-master-game-hack In PDF document text
    • http://matweb.pl/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://matweb.pl/images/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://matweb.pl/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://matweb.pl/images/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://matweb.pl/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://matweb.pl/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://matweb.pl/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://matweb.pl/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://matweb.pl/images/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://matweb.pl/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://matweb.pl/images/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://matweb.pl/images/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://matweb.pl/images/link-coin-master_GM406889139.pdfIn PDF document text
    • http://matweb.pl/images/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://matweb.pl/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://matweb.pl/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://matweb.pl/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://matweb.pl/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://matweb.pl/images/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://matweb.pl/images/robux-free-promo-codes_GM431946152.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_off00004a12.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A12 26012 bytes
SHA-256: d909f4f746b96e6c194facb5e260dd15a161d71dfc4abe35142b639f3ee7bb4d
font_01_sfnt_off000086ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EC 18056 bytes
SHA-256: 09cd9e464d76e3a3385f879857787e36dec082617c88c9984b9580abc08ffa43