Malicious PDF — malware analysis report

Static analysis result for SHA-256 8971bbf4a82159c3…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 04:28:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e7dfab4302e58828cbdaea8fb46294f2 SHA-1: 17ee42d1ea8d248a831c6667d908eb06e24e4b86 SHA-256: 8971bbf4a82159c32df2f16d121f900aada393c271e7d2d8467a482ce9d2b564
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text that promote 'free Robux' and game hacks, directly leading to a known malicious redirector. The heuristic findings confirm that the PDF links to a malicious redirector and uses a lure for game hacks. The document body also contains the primary malicious URL, indicating a phishing or scam attempt.

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/how-to-get-free-robux-hard-game-hack In PDF document text
    • https://www.metal.hr/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/tiktok-free-code_GM835599320.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/hot-to-hack-roblox-on-mac_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-free-gear-cheat_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-murder-mistery-radio-hack_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-phantom-forces-aimbot-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-free-robux-no-inspect-no-pastebin_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-a-free-dominus-in-roblox_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_off0000309a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309A 22664 bytes
SHA-256: 13262cb71d013fabc8fa5a1ba7f490c4e70e34eb0b8d668b23b955df64c0ae99
font_01_sfnt_off00006309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6309 19156 bytes
SHA-256: 8da629146c21d90970b02e6de0269772374915f8606ee88d7d01d4569273edcd

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