Malicious PDF — malware analysis report

Static analysis result for SHA-256 47514227bdb47dd5…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 01:44:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 5ae97802f295c51025725b7cab042a64 SHA-1: 3633c80aebdd12c519a7868a5acf06c8d9060df6 SHA-256: 47514227bdb47dd5371dd11f52b5cbc81c0ebf1341509fd1ee81cef0d3bb2172
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, specifically advertising 'free generator / game hack' content. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the embedded URLs and heuristic firings suggest the document's primary purpose is to redirect users to malicious infrastructure, likely for further payload delivery or phishing. The document body text confirms the lure content.

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.co/app/431946152/roblox-free-summer-codes-game-hack In PDF document text
    • https://library.elkatarie.ac.id/repository/robux-hacks-for-pc_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hacker-00-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-nijna-legends-hacks_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/ben-10-cosmic-destruction-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-get-free-bc-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/what-are-the-effects-of-free-robux-scams_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/wie-kann-man-bei-roblox-geld-cheaten_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hack-para-tener-robux-en-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/stigma-roblox-hack-download_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_off00002f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F08 22308 bytes
SHA-256: f398e5ce07c330fdfd8c08bc02e385de2c128ed72fb45a8fd481e2cf8e1fab0e
font_01_sfnt_off00006094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6094 19224 bytes
SHA-256: 2b996c3496d9db98a4b0f34b507fbf219c459ef3ed17fd7d231ee307505cec47

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