Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b3a32888c585ae…

MALICIOUS

PDF

35.9 KB Authoring application: OpenOffice Draw
MD5: 02c22270eb1fd6a1d2422b4cfb11b012 SHA-1: 300738ad86048bb63cf08da588527bcba013288b SHA-256: d0b3a32888c585aeca57c06900f4369cc75c04084540bcd17beec0c741f41c3e
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 by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing lure. The document body, though partially corrupted, mentions 'polytechnic lecturer notification 2018 pdf', indicating a pretext for the embedded links. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall, further supporting the phishing and potential malware delivery intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://hollyziemer.com/uploads/1/3/0/2/130287291/82f2fda08a.pdf
    • http://ds4all.tech/uploads/1/3/0/6/130604433/7547329.pdf
    • http://rumble-records.com/uploads/1/3/0/6/130639673/4210304.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/5/130545882/130545882.html#ap+polytechnic+lecturer+notification+2018+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fa2.bin
f44673e1f1d9a03f68cc4fe535b640cb15654596c1160871000c7cf25ef41f17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2 8084 bytes

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