Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7bc21f9457fbb8…

MALICIOUS

PDF

39.7 KB Created: 2020-04-09 20:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b767b024e5c557ddd36e7f98bcc19b3a SHA-1: 0c3a6d14df4d1ba8a05d1982ebb719c2d68bcb60 SHA-256: 1c7bc21f9457fbb89e55a1fdc66c3a85fd10c371ae5f2aed8c94fc40eed01490
92 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, many of which point to PDF files hosted on various domains. The document body mentions 'Australia post pricing guide' and the heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a link farm or redirection scheme. The primary goal appears to be directing users to a network of malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://islamophoria.com/uploads/1/3/0/8/130813483/130813483.html#australia+post+pricing+guide
    • http://customcomputer.shop/uploads/1/3/1/3/131380236/cee4c7b18.pdf
    • http://eduardoscleaningservices.com/uploads/1/3/1/4/131438163/bevigidub.pdf
    • http://nenetravel.com/uploads/1/3/1/1/131164113/sewefilotapibafopur.pdf
    • http://josephturyatemba.com/uploads/1/3/0/5/130589137/kafululabuwetuneb.pdf
    • http://highdefinitionpaintingservice.com/uploads/1/3/0/6/130621554/42bedd00a0.pdf
    • http://theholistichousevet.com/uploads/1/3/0/7/130739824/zobexok.pdf
    • http://karlamariephotography.com/uploads/1/3/0/7/130739308/9849399.pdf
    • http://kshiv.org/uploads/1/3/1/4/131437012/libanawudasi.pdf
    • http://burghology.com/uploads/1/3/0/7/130776122/4520340.pdf
    • http://swiffly.com/uploads/1/3/0/6/130604341/8ebb12a56c.pdf
    • http://summerstormdesigns.com/uploads/1/3/1/4/131453269/bunok.pdf
    • http://suzanlove.com/uploads/1/3/0/7/130740010/1709036.pdf
    • http://gilbertyorkies.com/uploads/1/3/0/2/130272610/gureruk-robezusevubib.pdf
    • http://tazia.org/uploads/1/3/1/3/131380181/rozosodixigulum_mobiji_vafatifol.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_off0000721f.bin
f1196dc921374e34e63efe2b612cafa8cbf9e148fb867c9da101e8a2a3377d2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x721F 8284 bytes

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