Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0ed2a5b917f615e…

MALICIOUS

PDF

42.2 KB Authoring application: pdf-parser
MD5: d28d2f4c73d54782de568e1c08433ba9 SHA-1: 8c0a79103118755be7c576f7975b96d83a399368 SHA-256: b0ed2a5b917f615e7409adb406817bfdb3d48c6205a74a427503cb731dd928a8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm designed to manipulate search engine results or to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or SEO spam.

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.
  • 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://mobilemealsoftucson.org/uploads/1/3/0/5/130588806/pesamu.pdf
    • http://ctodesign.com/uploads/1/3/0/3/130379094/wamigesojaba-rekoweguwefujov-sumet.pdf
    • http://mathprnt.net/uploads/1/3/0/7/130776811/boxasa-vekisejodoxamus-fajowobamane.pdf
    • http://belgiantrade-australia.org/uploads/1/3/0/6/130604113/rezun-vavefavevujubuj-duvexe-sijokebax.pdf
    • http://mychampionlifechurch.com/uploads/1/3/0/7/130738662/porole.pdf
    • http://sonoranlashes.com/uploads/1/3/0/4/130483343/rimojobanipejoberifi.pdf
    • http://reikisoundbliss.com/uploads/1/3/0/5/130550824/lubifasajego-wakaranudi-rurefuxotubez.pdf
    • http://vizaxike.hiperamarelas.com/uploads/2020/01/28/1954744.pdf
    • http://nonakaconsulting.com/uploads/1/3/0/4/130476288/suviwamixives_susepujirep_wunadixap_tiralinokukerum.pdf
    • http://gexolek.ach-dziewczyny.online/uploads/2020/01/29/lakukata.pdf
    • http://ashleylarnold.weebly.com/uploads/1/3/0/6/130604324/35b323.pdf
    • http://mymissblue.com/uploads/1/3/0/4/130436250/130436250.html#arbitrase+syariah+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013a0.bin
10de0faf3d4ec410c404ed915f3575ffbdc1bd3beb27729ad33194789cb6df7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A0 8308 bytes

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