Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e8f5f1fa352a28…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 00:24:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9ce3266da06481396e8ae4ceddb8dee6 SHA-1: 4009f2f64cf982eda9255056348e5e7a11e2e8b8 SHA-256: 68e8f5f1fa352a28bece4c1878927f750ae85cdceb64446aeedb481f40df20df
102 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 0.9980

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.co/app/431946152/alone-in-roblox-free-money-game-hack PDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-mobile-hack_GM431946152.pdfPDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/get-free-clothing-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-anything-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/are-roblox-hack-clients-a-thing_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-free-catalog-hacks-thumbnail_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/descargar-hacks-para-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-ninja-pack-roblox_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-2021-promo-codes_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-spins-coins-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
font_00_sfnt_off0000325e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325E 22584 bytes
SHA-256: 061349ccfbe83f1f85d2789fe369558c8308756ed6faf3818810d1e7a5eb2f20
font_01_sfnt_off000064d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 19028 bytes
SHA-256: 924e6b7a7aac2859cab39aa8172aa391894bf7320dc6591d493f3a90d5a74d02

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