Malicious PDF — malware analysis report

Static analysis result for SHA-256 282f6312c3c30321…

MALICIOUS

PDF

36.1 KB Created: 2020-04-06 10:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: da4216217f201c2cf945739eafd876bb SHA-1: ed913c0e9c9b78bcf24f35dc1cce995ca5d641a3 SHA-256: 282f6312c3c30321ead9c18bac3e1869c53637fe81d64e59343db7e43d5cc167
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDFs hosted on various domains, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious. The document body text is heavily obfuscated but appears to contain references to the URLs, suggesting a lure to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://supersealusa.com/uploads/1/3/0/2/130289686/130289686.html#ny+motorcycle+permit+manual+pdf
    • http://soulchoices.com/uploads/1/3/0/2/130289466/b3f8b34.pdf
    • http://michaelwarrenmurphy.com/uploads/1/3/1/0/131069812/d93d9de.pdf
    • http://woofloo.com/uploads/1/3/0/5/130551174/lovulirogofo.pdf
    • http://hhsalesandconsulting.com/uploads/1/3/0/2/130289232/gujunax_bipamidalaxa.pdf
    • http://ashestoashesband.com/uploads/1/3/0/5/130590325/3958a1.pdf
    • http://sidetracks-newzealand.com/uploads/1/3/1/0/131071057/1180586.pdf
    • http://bergencountyfieldhockey.com/uploads/1/3/1/3/131398157/fotejetur-zuzor-tusufu-sapasepu.pdf
    • http://primetimesolarenergyllc.us/uploads/1/3/0/2/130272580/7999257.pdf
    • http://chicostate2037.org/uploads/1/3/1/0/131071183/zigivipenulo.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_off0000675f.bin
366899a71410fa8cf231e47576f19be80472c28eb9eef91fc87d52617e28769c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675F 7344 bytes

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