Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7dcf598b0e6510a…

MALICIOUS

PDF

102.6 KB Authoring application: Scribus
MD5: f6857b251fed6edaef0a3f2be16fecdc SHA-1: b6ae3a28eafd456831c915c9cb07ea08fed91fa2 SHA-256: a7dcf598b0e6510a2323b4109fa7c5ebf864cdb648a68f1bc38ee9890b0e76e1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. This strongly suggests a phishing or SEO spam campaign. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing intent. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://misosemaga.agicole-acces.com/uploads/2020/01/29/jegikoliziju_mejimavaxodij_fivolokox_movuxikip.pdf
    • http://jamesbaylee.com/uploads/1/3/0/7/130738819/21c9335c.pdf
    • http://fcflow.com/uploads/1/3/0/5/130540507/digedopej_jafeseju_vajaxogoruzapax.pdf
    • http://scubatribemaldives.com/uploads/1/3/0/5/130590164/sulur.pdf
    • http://xejodataxu.fabrika-perchatok.com/uploads/2020/01/28/f272d499c4a03.pdf
    • http://5foot1ninja.com/uploads/1/3/0/6/130620249/rabinopaket-tijex-pamodatagu-duzatajatoza.pdf
    • https://sotopikuko.weebly.com/uploads/1/3/0/5/130540683/jipewizeke.pdf
    • http://tedibuz.shapewear-official.pro/uploads/2020/01/28/muwijarajaligi-guxonatel-belomifiwo-fijelumamugof.pdf
    • http://delgiacconeuroarttherapy.com/uploads/1/3/0/5/130589004/0c013907.pdf
    • http://teachingpowers.com/uploads/1/3/0/6/130640095/lujazalogovew.pdf
    • http://lenke-nauck.com/uploads/1/3/0/6/130603986/9955686.pdf
    • http://bima.best-of-world.ru/uploads/2020/01/28/8183066.pdf
    • http://misssoutheastpageantry.us/uploads/1/3/0/6/130604009/130604009.html#formacion+chile+femenino+hoy

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001573.bin
4e6ac32aac4176382bbc3bcc11c133f03b1823f1e60d893dec5dbbc89c591e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1573 11840 bytes
font_01_sfnt_off0000a3e4.bin
d3c42c6c83bb3d855f7a2c3612efae7ade4e1bed98542fa9da37a67f86122af8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3E4 2344 bytes
font_02_sfnt_off0000acee.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACEE 16036 bytes
font_03_sfnt_off0000c113.bin
0ef1112e50e2a86488aadde4d8a477a3649c66578d8f2a84f2c6ad20bbddbbf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC113 2732 bytes

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