Malicious PDF — malware analysis report

Static analysis result for SHA-256 09fdd1c196e1e828…

MALICIOUS

PDF

45.1 KB Authoring application: Mobipocket Creator
MD5: 77be5f8727e7b09ed39a6a0ecf48bed8 SHA-1: 8a2fdeb875c5e1908a5c3fb95d205deb444aa88a SHA-256: 09fdd1c196e1e82852ff82a0885c04c0b21955976ff806c5df6d1bcc81d56e08
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files. This suggests a tactic to manipulate search engine rankings or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. While no scripts were explicitly extracted, the structure of the PDF and the embedded URLs are indicative of a phishing or content distribution scheme.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://mgtowtv.com/uploads/1/3/0/5/130551006/relomeriloroda.pdf
    • http://crwlodge.com/uploads/1/3/0/4/130483631/442e6.pdf
    • http://nen.angelis-spa.com/uploads/2020/01/28/d043cc372df79.pdf
    • http://utahdivorceconsulting.com/uploads/1/3/0/5/130590030/jaredetidisima.pdf
    • http://badkittymojo.com/uploads/1/3/0/5/130550855/nelog.pdf
    • http://mvchoreo.com/uploads/1/3/0/4/130483215/4278074.pdf
    • http://trustedadvocates.org/uploads/1/3/0/6/130621786/7602674.pdf
    • http://dtnore.xyz/uploads/2020/01/29/6a75c9.pdf
    • http://objectrelationsrecords.com/uploads/1/3/0/4/130488696/wibexizawazusa-tebutom-pulomix.pdf
    • http://gituve.tsecur.com/uploads/2020/01/28/faxozemeb.pdf
    • http://pinkjewelers.net/uploads/1/3/0/3/130323930/9141fb0b51a20e8.pdf
    • http://musicboxinvites.net/uploads/1/3/0/6/130639960/sebiketiwipuno_tosiza_zaraxujur_lupejavofaju.pdf
    • http://nowator.eu/uploads/1/3/0/6/130639903/130639903.html#beat+maker+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001361.bin
49bb001b01648300bc38bb4a23267279c75a35d2329af1189c8d99178d45e529
pdf-font-stream PDF embedded font (sfnt) at offset 0x1361 9240 bytes
font_01_sfnt_off00007579.bin
bb66d78edca8aa75a8db461931e44ad6eab12e4cd439df836d92d13c6ef6c22d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7579 2668 bytes