Malicious PDF — malware analysis report

Static analysis result for SHA-256 2908291ebe63b7ab…

MALICIOUS

PDF

33.5 KB Created: 2021-06-21 05:47:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 74917d17023753ed660ab4f22028233d SHA-1: 5b4e6c98d5e1838a5db6549cbc803ae43e2878c1 SHA-256: 2908291ebe63b7ab1502ce1e42f3189b0ff7d3177b68acce5618c6f5f72767d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristic firings indicate a lure for game hacks or generators, which is a common social engineering tactic. The embedded URLs suggest the document is designed to redirect users to sites that may host further malicious content or exploit kits.

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/free-roblox-sun-glasses-game-hack In PDF document text
    • http://bgnails.nl/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/pastebin-free-robux-fast-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-go-to-guuudd-info_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-a-roblox-account-with-pin_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-free-robux-for-wiewers_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/hack-any-roblox-account-script_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/bux-free-robux_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_off00002bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDE 22560 bytes
SHA-256: f4b69079f9e9699f58e99f3b884fceebc3def8804aea60f81616875e27a4abdc
font_01_sfnt_off00005e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E77 18788 bytes
SHA-256: 39988c496f956f313f318f3e13a0aad12dabbab601b1d0c032d7826ae5078365

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