Malicious PDF — malware analysis report

Static analysis result for SHA-256 679bc5ee7b24e190…

MALICIOUS

PDF

47.4 KB Created: 2021-06-08 11:04:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e0af897c57e314477b707390fdfc5090 SHA-1: 307291f9e51f3ce042ed80ddf02cde68b40cd32e SHA-256: 679bc5ee7b24e19014c8c9c446271a91f75a457f62f5584d47f85da339e87fd0
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded links also indicate a lure for game-related cheats or generators. The presence of a password-protected archive lure suggests an attempt to bypass security scanning by encrypting the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://netcdn.tw/app/431946152/roblox-becomming-rich-free-game-hack PDF link annotation
    • http://fairwaygolftravel.co.uk/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/optifine-pe_GM479516143.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/ex7-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/how-to-get-game-pass-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/hack-de-coin-master_GM406889139.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
stream_004_off000050e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E5 30776 bytes
SHA-256: ed1de07107d0c9c04027df6a83500db05f5dc3ab5054c93db17d769039ff7629
font_01_sfnt_off000095a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A7 18780 bytes
SHA-256: 3301c936a6c57b56e9e3a0dd79e82682b00e8c04ab720bdc9c3f00374819b50b

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