Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33ffc9259547232…

MALICIOUS

PDF

38.0 KB Authoring application: PDFedit
MD5: f37d97f9aef7ac9f71eb40df75142e1d SHA-1: 7a4e7a2413493daa825c1b3c5888cbfe033ab89d SHA-256: e33ffc925954723258089914e2162dd25e0cf43e0787528e3236f00592553bbe
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, mentions 'BAf�g formblatt 5 online ausf�llen', suggesting a lure related to official forms. The primary attack pattern involves redirecting users to numerous PDF files hosted on various domains, likely for SEO spam or to distribute further malicious content.

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://thefoothillstrails.com/uploads/1/3/0/3/130379178/jetukaxagovunodozu.pdf
    • http://137point5bodycare.com/uploads/1/3/0/6/130604667/tukutezujurotaju.pdf
    • http://seacareconsult.com/uploads/1/3/0/3/130323277/5573790.pdf
    • http://newleaf-dayspa.com/uploads/1/3/0/5/130542909/lokorep_wijavixawuvudo_gedifedeg.pdf
    • http://speed-gemmes.com/uploads/1/3/0/6/130604807/suxoluxav.pdf
    • http://naturebandz.com/uploads/1/3/0/3/130379243/repiror.pdf
    • http://mofouad.com/uploads/1/3/0/4/130488498/a6efbc2.pdf
    • http://peliw.bibaandboba.info/uploads/2020/01/27/8836278.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/6/130604465/130604465.html#baf%C3%B6g+formblatt+5+online+ausf%C3%BCllen

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e4.bin
2989a98f4f773b32547be8dc8ad821e5138de3512e285b20f270f94ac17ec9d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4 9248 bytes

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