Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4e65e37bfd0c84…

MALICIOUS

PDF

41.7 KB Created: 2020-04-20 07:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 564d5cf1e8b94bcbb1c6edc013d39848 SHA-1: 7dba01ff4677b5bd01373c943c086ce6da5189a0 SHA-256: 7b4e65e37bfd0c84c8df24e17770c7d2b745e5c344742302c4b0f8e601f5808a
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a common technique for SEO poisoning and redirecting users to malicious content. The document body, though heavily obfuscated, contains text related to 'Alice in Wonderland book review pdf' and references the wkhtmltopdf tool, suggesting a lure to disguise the malicious link farm. The primary attack pattern involves a link farm hosted on multiple domains, likely to distribute malware or phishing content.

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://retrobikesdublin.net/uploads/1/3/1/6/131637853/131637853.html#alice+in+wonderland+book+review+pdf
    • http://lunartrails.net/uploads/1/3/1/4/131452800/19ac4cee68bed.pdf
    • http://tmitchellportfolio.com/uploads/1/3/1/3/131397964/poboluzefowijo.pdf
    • http://migifitness.com/uploads/1/3/0/5/130542907/fb4ec353a16.pdf
    • http://calaverascaravan.net/uploads/1/3/0/7/130775892/54cc2.pdf
    • http://plaguepilgrim.com/uploads/1/3/0/5/130588551/90239fe291.pdf
    • http://thesimplestinstructions.com/uploads/1/3/0/4/130476339/6902333.pdf
    • http://sprossforschools.com/uploads/1/3/0/6/130605124/mugetakeloxo.pdf
    • http://true2self.net/uploads/1/3/0/7/130739225/7582036.pdf
    • http://fiduciaserviciosprofesionales.com/uploads/1/3/1/0/131070774/463e1e45.pdf
    • http://wildorchidtobermory.com/uploads/1/3/0/5/130588527/darisinewir.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a4c.bin
473507f1e100a5d24c33b4f6f457e6ae8894147a9a730724ff0a9e0221a7de49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4C 8076 bytes

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