Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63a4fd48dcf3fba…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 09:37:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 50a56718576e03274fd67eb6f82ac9c6 SHA-1: 255d1293da9d338b49be749e4a5f0150d62a30eb SHA-256: c63a4fd48dcf3fbaa0688876f4d484c87fdc783c818265641ad61f06ff06c5b5
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/how-to-get-free-roblox-game-card-codes-game-hack PDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/a-tool-to-get-free-in-roblox-purchases_GM431946152.pdfPDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hack-fbi-meme_GM431946152.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/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/tiktok-free-pizza_GM835599320.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/find-the-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-redeem-card-hack_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-roblox-site-whit-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-offline-free-download-pc_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/get-robux-for-freecom-on-computrt-2021_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/hack-roblox-online-no-survey_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-mba-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/no-click-cheats-for-roblox-jailbreak_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_off00003392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3392 22392 bytes
SHA-256: 8df8bc77e58184daae8c2e94ad2b501bf00cf10e04dc95d461184100ca21e13a
font_01_sfnt_off0000654f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 19352 bytes
SHA-256: 370d71444d3fe036f1fd847c8cd1e782ba92f70cad2155ed37f616ba97fd5b82

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