Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67ddaf59fdd76ea…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 02:55:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 43ca9e16751424eac57d1acd21e73e94 SHA-1: e08fdd909ee13f15a49dfba147a4ae9ad0b501b3 SHA-256: e67ddaf59fdd76eabb6cb0144c15130e7dc7f42c14eef9f706faf487949f0701
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'game hacks' and 'free generators'. The document body, though partially obfuscated, contains the primary malicious URL. This indicates a phishing or scam attempt designed to lure users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-review-game-hack In PDF document text
    • https://ethraa.ae/userfiles/files/tiktok-views-free_GM835599320.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/download-roblox-hack-booga-booga_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/roblox-site-hacked_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-free-clothes-on-roblox-games_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/roblox-tracker_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-codes-generator-2021-july_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/descargar-hack-para-roblox-jailbreak-2021_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
font_00_sfnt_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 22944 bytes
SHA-256: 5d5c23b6480742524b644cf6fdea7ad6eb50aac79aaddd6791862c7aac16258c
font_01_sfnt_off0000634b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 18280 bytes
SHA-256: 42a7676fde99fe9d5efa47a4832869596e89442516066475bca93fddc38608bb

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