Malicious PDF — malware analysis report

Static analysis result for SHA-256 0068c3e1fbc7ad20…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 05:23:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a767e212cf84385776ee53ed35fa7473 SHA-1: 4c48b4ced4154948b99b7068a083f7688b99bf5d SHA-256: 0068c3e1fbc7ad204455626043f6f96c8759ccabc699f5e059160e8ef717e408
142 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to sites offering free game currency or hacks. The 'SE_MFA_LURE' heuristic suggests a credential harvesting attempt, possibly by directing users to fake login pages. The 'ML_NYX_PDF_MALICIOUS' score further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.online/app/835599320/free-followers-for-tiktok-game-hack
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/minecraft-free-download-iphone_GM479516143.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/minecraft-apk-download-free-11-055_GM479516143.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-robux-no-email_GM431946152.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/how-to-hack-fe-games-roblox-v3r_GM431946152.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/robux-hack-generator_GM431946152.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-printable-roblox-coloring-pages_GM431946152.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/ac-market-coin-master-hack_GM406889139.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-coins-coin-master-link_GM406889139.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/roblox-robux_GM431946152.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-coins-coin-master-link-2021_GM406889139.pdf
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004d0b.bin
d253ceba81c705edf829789d5260c594b1e19825c6f2264ecbc539452dea772c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0B 24688 bytes
font_01_sfnt_off00008625.bin
1f78b91f0c2492c05ffeec3d34563e43a0b15f4cc5b4ec219908e79cb2313b3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8625 17692 bytes

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