Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc71851bf251422…

MALICIOUS

PDF

34.8 KB Created: 2021-06-22 11:35:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 810d7c21f8c3f19b938c3ddf789b5898 SHA-1: 5276050c49e4d6a924bb36647ab2f07bd6ccd170 SHA-256: 2cc71851bf2514227c0e4af553a58925b5878bc202da3ee6f6270accd227ca9a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded links, forming a link farm, that direct users to websites offering 'Roblox' hacks and free Robux. The ML classifier strongly flagged this PDF as malicious, and the presence of these links suggests an attempt to redirect users to potentially malicious sites or download further payloads. The document body, though partially corrupted, contains similar lure text and URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.co/app/431946152/hacked-warning-roblox-id-game-hack PDF link annotation
    • http://pia2000.net/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/robux-hack-without-survey_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-can-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-admin-commands-hacks_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-hack-in-roblox-fly-threw-walls_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/what-is-e-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-heroes-online-hack_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/how-to-cheat-on-any-roblox-game_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/i-forgot-my-roblox-password-2021-hack_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-upload-music-to-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/free-game-card-roblox-codes_GM431946152.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
font_00_sfnt_off000030f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F2 22216 bytes
SHA-256: f560abbf06b7b1a5171787b98e4d704911f3278ab8069ddd65904d641715d092
font_01_sfnt_off00006267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 19148 bytes
SHA-256: 82683fffedffcc7b08885999721e31edefaf574ef1ad5da4313c868495d38cd4

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