Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f594238275d238…

MALICIOUS

PDF

44.4 KB Authoring application: Serif PagePlus
MD5: 79ea1b808106609cdf17d5033fa91320 SHA-1: cd6102f85a02dcea6a773b700fb2ef8e4751eb9d SHA-256: 90f594238275d238f0cbc059e454a8903d58573c344954afa926b99b65f763be
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further indicates a malicious intent, likely related to phishing or traffic redirection. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of numerous links to PDF files on unrelated domains suggests a link farm or redirection scheme.

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://taurusbulldesigns.com/uploads/1/3/0/6/130621568/3468134.pdf
    • http://bayflier.com/uploads/1/3/0/5/130590395/6631225.pdf
    • http://norawahlbrink.com/uploads/1/3/0/2/130270746/wewelarokek.pdf
    • http://vem.audiostart37.icu/uploads/2020/01/28/linilexirip_filutifavozoso_piwiliseled.pdf
    • http://thebigimportantfoodblog.com/uploads/1/3/0/5/130539416/vagisosirat.pdf
    • http://beautibybrownie.com/uploads/1/3/0/5/130545194/woduzekuguxu-kakizex.pdf
    • http://adriantobin.com/uploads/1/3/0/2/130270907/1580763.pdf
    • http://trevornewtonartist.com/uploads/1/3/0/5/130541743/kogok.pdf
    • http://321markets.com/uploads/1/3/0/5/130590133/filasivipujosogufoz.pdf
    • http://vipiski-besplatno.icu/uploads/2020/01/28/40cc593.pdf
    • http://keepdivealive.com/uploads/1/3/0/6/130621569/pamakibovupuzixez.pdf
    • http://vuxitip.vraonline.ru/uploads/2020/01/28/3478430.pdf
    • http://jugazif.csgo-bet.ru/uploads/2020/01/27/4086891.pdf
    • http://myriadpharmacy.com/uploads/1/3/0/2/130288710/pukusufo-fijijopun.pdf
    • http://nswdecbyod.weebly.com/uploads/1/3/0/2/130270743/0155e2d.pdf
    • http://numutux.flyinbrasil.com/uploads/2020/01/27/depuvux-fezux.pdf
    • http://podollangpis.devsite-1.com/uploads/1/3/0/4/130483653/130483653.html#fmea+rpn+rating+scale

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015c6.bin
669301c2519c9e0810790b6885843a7a8002e0709310530828aaa5d3aedb66a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C6 8240 bytes
font_01_sfnt_off00007210.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7210 2652 bytes

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