Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6eb3eac60b3a8cf…

MALICIOUS

PDF

47.6 KB Created: 2021-05-15 13:35:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5bcf762f5f1386aef85c7928cf59909c SHA-1: a5f31c99052e07e395388daf780cf78c3baca1d8 SHA-256: a6eb3eac60b3a8cfb3304f9973b947f67e648df98bbb2904fe3b5b53f814f2a5
122 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs that form a link farm, likely intended to direct users to malicious or unwanted content. The presence of a "download button" heuristic and the ML classifier's positive flagging further support its malicious nature. The document's content and structure suggest a lure for potentially harmful downloads or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/479516143/free-minecraft-survival-server-game-hack
    • http://mohacad.hu/images/blogspot-coin-master-free-spins_GM406889139.pdf
    • http://mohacad.hu/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://mohacad.hu/images/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdf
    • http://mohacad.hu/images/get-free-robux-com_GM431946152.pdf
    • http://mohacad.hu/images/coin-master-free-spins-links-app_GM406889139.pdf
    • http://mohacad.hu/images/coin-master-hack-online-cheat_GM406889139.pdf
    • http://mohacad.hu/images/minecraft-free-computer-game_GM479516143.pdf
    • http://mohacad.hu/images/games-that-give-you-free-robux_GM431946152.pdf
    • http://mohacad.hu/images/how-to-get-free-snacks-on-coin-master_GM406889139.pdf
    • http://mohacad.hu/images/tower-of-hell-roblox-hack_GM431946152.pdf
    • http://mohacad.hu/images/free-robux-wheel_GM431946152.pdf
    • http://mohacad.hu/images/roblox-studio-free-robux_GM431946152.pdf
    • http://mohacad.hu/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://mohacad.hu/images/hack-para-coin-master-sin-verification_GM406889139.pdf
    • http://mohacad.hu/images/how-to-make-robux_GM431946152.pdf
    • http://mohacad.hu/images/minecraft-windows-10-free-with-java_GM479516143.pdf
    • http://mohacad.hu/images/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdf
    • http://mohacad.hu/images/coin-master-hack-2021-ios-download_GM406889139.pdf
    • http://mohacad.hu/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdf
    • http://mohacad.hu/images/wahoogaming-co-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c97.bin
5425fcf63eec4b5999f08f801ed80501161a3d3c98b89cffcee7366f450449e8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C97 24636 bytes
font_01_sfnt_off00008452.bin
f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8452 3020 bytes
font_02_sfnt_off00008ea7.bin
4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA7 2816 bytes
font_03_sfnt_off000098b8.bin
a416ee995e2fcdad104e8f08570a8c057a7877f0093c65a8eab662d227b30cb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98B8 17896 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.