Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2561ad93c76f3cf…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 20:10:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5040551e0c07cc8ba207f7b06c9d2ecf SHA-1: 266fe51361cbda16adffd79d9d640d1bc8bcd876 SHA-256: d2561ad93c76f3cf0a0cd436e4f64f49e518e3ac98f62821b03edd343fd0e7c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a lure of game hacks and free spins to entice users to click on embedded links. These links lead to known malicious redirectors and further malicious PDF files hosted on `villazeus.eu`. The document's structure and embedded URLs strongly suggest a phishing or scam campaign aimed at driving traffic 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/haktuts-coin-master-free-spin-today-game-hack In PDF document text
    • http://villazeus.eu/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://villazeus.eu/images/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://villazeus.eu/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://villazeus.eu/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://villazeus.eu/images/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://villazeus.eu/images/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://villazeus.eu/images/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://villazeus.eu/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://villazeus.eu/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://villazeus.eu/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://villazeus.eu/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://villazeus.eu/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off000049da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DA 25368 bytes
SHA-256: b472cff3a1655302cadebbda2ed8df6d8302ed2568bf87bb23b3ddbbcaa0d6da
font_01_sfnt_off00008383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8383 18548 bytes
SHA-256: ff29dc36ee836ec27aa4b8c67db5cb92c4140edc8b4c21c52ca42a759f788c2c

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