Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7805b2d0c0c3c4d…

MALICIOUS

PDF

42.9 KB Created: 2021-04-23 07:55:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6d94cbbec165e460e176bec0d8052a99 SHA-1: 37367695bc88159a38de830cfdc45b88394bda0f SHA-256: b7805b2d0c0c3c4ddfc1a09c68a63d5f11309d0ac7d691d389c2d2d5737c3328
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9836

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netsecure.pro/app/431946152/how-to-get-the-chill-turtle-on-roblox-free-game-hack PDF link annotation
    • http://ferienwohnung-dorsten.com/images/free-twitter-coins-code-on-roblox-treasure-hunt-simulator-2021.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/roblox-phantom-forcews-hack.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/free-roblox-no-scam.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/green-hacker-tshirt-roblox.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/unpatchable-robux-hack-website.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/code-roblox-superhero-tycoon-promo-free-admin-code-tycoon.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/how-to-get-the-lamborghini-in-roblox-jailbreak-free.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/how-to-hack-roblox-accounts-passwords-2021.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/bandit-free-roblox.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/comment-hacker-un-compte-roblox-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000417f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x417F 23964 bytes
SHA-256: b358da4a0b2c0ba7d5ecb1d896480f094578200edc0fc455d1287d44d7c6c773
font_01_sfnt_off00007809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7809 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000084b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B0 18644 bytes
SHA-256: 4b8531f84034a1f9706740ad17c2030c8cfe4351d7ec1abaa715ab626184e385

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