Malicious PDF — malware analysis report

Static analysis result for SHA-256 b55482ca796502d2…

MALICIOUS

PDF

46.4 KB Created: 2021-05-14 08:21:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d2a515d9c5697520f1a5d5bb44689b7d SHA-1: 1cf01ccb6335f7bc1e0faa2a4438ce0b13d528ae SHA-256: b55482ca796502d2cafb12ba54b1b13c3c1fadf024ebe48778504e1e57c18b6b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9977

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.xyz/app/431946152/download-apps-for-robux-game-hack PDF link annotation
    • http://tasleemdubai.com/userfiles/files/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CD 31880 bytes
SHA-256: e6e3b237f237835a2de752974bac50397f7c194656464dd17fb95b796aae5819
font_01_sfnt_off00009118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9118 18996 bytes
SHA-256: ea235c61f7ee6ff97cb8e2e4b8381115f9ce59fc272e8f2939e83a9622de1179

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