Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b39f3bff679d9d…

MALICIOUS

PDF

49.2 KB Created: 2020-06-16 15:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab6ad238000130bc2e76d574a935038d SHA-1: db08a5ac9bbbbb66cd8590c20904f39d8cede6ae SHA-256: e1b39f3bff679d9deb6e09bcb571bf951b446bfb2008fc4b47d7b3290bfa89f1
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The embedded document body text, though heavily obfuscated, contains a URL that is also present in the list of external links. This suggests the primary purpose of the PDF is to redirect users to a network of potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • 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://4s3.undesirable.us/uploads/1/3/0/7/130740316/130740316.html#eric+whitacre+sheet+music+pdf
    • http://snbrs.com/uploads/1/3/1/6/131606720/3562925.pdf
    • http://55newcavendishstreet.com/uploads/1/3/0/8/130814290/muwevikori.pdf
    • http://chiquestinc.net/uploads/1/3/0/7/130776177/dawuwe.pdf
    • http://frankiedubery.co.uk/uploads/1/3/0/8/130874338/855970.pdf
    • http://mail.browbeginnings.com/uploads/1/3/0/8/130815381/mofekud.pdf
    • http://aftrd.org/uploads/1/3/0/5/130588810/buzuxegi-sogizuwaku.pdf
    • http://hostmaster.bradfordww1.co.uk/uploads/1/3/0/7/130776003/85c1a766a3e0.pdf
    • http://stonestars.co.uk/uploads/1/3/0/2/130291779/xawisezuro_nuwilagotivatik.pdf
    • http://corronfarmpreservationsociety.org/uploads/1/3/0/2/130287929/ccb278f5.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c1e.bin
08854200718474e79bb145ab014ff645b128a842afd54ef4b0e98d084f93b0d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1E 12196 bytes
font_01_sfnt_off0000a439.bin
2cfc97915d250804213c9b0e6ad261e0979cd38371fb36ec9174dea58a153a3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA439 16120 bytes

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