Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ab5edfbab237bf…

MALICIOUS

PDF

41.7 KB Created: 2021-05-16 05:12:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 05dc849ffb774b7fce4f9c0f5fe601f9 SHA-1: beffdb7680740d85f2da299154ae8e0fc5a1bb42 SHA-256: d6ab5edfbab237bf8eb9cd0abe87d7c920638fbcbe6c9f55527e4378adbf678d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and cheats. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click these links, likely leading to further malware downloads or phishing attempts.

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/mangocheats-com-hack-coin-master-cheat-game-hack In PDF document text
    • http://only1you.ru/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://only1you.ru/images/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://only1you.ru/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://only1you.ru/images/free-robux-accounts_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_off00004739.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4739 24804 bytes
SHA-256: 84f8e218f79c64523722c0b444f333bcbc12d2831a721626a500cc2ade615c05
font_01_sfnt_off00008060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8060 18428 bytes
SHA-256: 4e99dec5d3f02dcbc06ca26300d3045f9b8d8d35bff9f7dc87105fb536b7f18c

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