Malicious PDF — malware analysis report

Static analysis result for SHA-256 05268d05b33022cb…

MALICIOUS

PDF

44.2 KB Created: 2021-06-08 23:37:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3c2c31b106fc9bcd145e7d99a4735d1f SHA-1: 1db4e089a0f6a72643424a3daa484e449c068bd7 SHA-256: 05268d05b33022cb38c51d889350babaab8766de724d0f96e376cfef912e5867
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a website that promises game hacks, a common lure for malware distribution. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content, likely a downloader or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/cheat-engine-roblox-tricks-game-hack PDF link annotation
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-robux-no-scam_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
stream_004_off000052de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52DE 25204 bytes
SHA-256: c65af99d7edb5446b7e032d7ecc5e37317d4eeb4459c3fd92a4197f3a209f23c
font_01_sfnt_off00008c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0B 18860 bytes
SHA-256: 1cfe6221187f0c0166bec73023c5fd05da2b361643c025ce70f0e721cf612718

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