Malicious PDF — malware analysis report

Static analysis result for SHA-256 4275b462f3bf8fda…

MALICIOUS

PDF

40.8 KB Authoring application: pstoedit
MD5: 53510216e695f817c35275cc2330ff3a SHA-1: e17464451ff72f8bf4707997fabbcd1cc1d920f4 SHA-256: 4275b462f3bf8fda55ea81f85abad585e2800e57512d308ef58040b515bdfec4
120 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, a technique commonly used for phishing or distributing further malware. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. The document body, though heavily corrupted, contains text related to the abolition of the transatlantic slave trade, likely a lure to encourage clicks on the embedded links.

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://eosplit.ru/uploads/2020/01/28/8046b485d62b4.pdf
    • http://mercy-reigns.com/uploads/1/3/0/6/130604910/71257fae0184.pdf
    • http://cairnsclassictours.com/uploads/1/3/0/6/130605196/keseperizof.pdf
    • http://nextgentheatreco.com/uploads/1/3/0/3/130379423/piguxiruwati-koxewo.pdf
    • http://minerup.com/uploads/1/3/0/4/130488299/dofufoba.pdf
    • http://miseniorcenters.com/uploads/1/3/0/6/130620979/e8f3813b2857ebc.pdf
    • http://myschoolchoicestory.org/uploads/1/3/0/4/130435826/130435826.html#the+abolition+of+the+transatlantic+slave+trade

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001132.bin
34d2972ac7ddc22cb66ac12d66e178862ef0e14463df2c6c8f9473f804e0d5bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1132 9044 bytes

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