Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c59a96e254e0cd…

MALICIOUS

PDF

45.3 KB Created: 2021-06-02 17:25:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 637d9b1148a9d69f52df76ec60163c1b SHA-1: d149fe27febe221d47cc296b45e840526a85ca0e SHA-256: f3c59a96e254e0cd2bf3ab366eeb927f5f60cc4f54f4cbe1c94672cc830e4adf
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 0.9864

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 https://netcdn.xyz/app/431946152/cheats-for-titan-simulator-roblox-game-hack PDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfPDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/download-apk-tiktok-free_GM835599320.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-games_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/tiktok-free-2021-followers_GM835599320.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_off000050f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F0 26168 bytes
SHA-256: d7a1f2bafc0a64c1eb8ded33f55251e986be319308cc50e343fbba5b2a6361df
font_01_sfnt_off00008c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C87 18964 bytes
SHA-256: b454b5463973056ebbf577264b7d5b5c5ea71d9155f660b2178223186b8e5516

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