Malicious PDF — malware analysis report

Static analysis result for SHA-256 82bf20809104db9d…

MALICIOUS

PDF

41.1 KB Created: 2020-07-08 11:53:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49435854d1409d62f05f8ea9e1629dd1 SHA-1: 1f808be8840d2f450ec3ef142814c32f7ef4745e SHA-256: 82bf20809104db9d1fc18e15868f33f22b2d8a1253f8e1ab66cfb7ba82caab17
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains that appear to be part of a link farm. One critical heuristic firing indicates a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. This suggests the primary goal is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.com/wb?keyword=business%20model%20validation%20what%20makes%20business%20models%20work%20pdf
    • http://files.sincityimprovserial.com/uploads/1/3/2/6/132695839/jujibenedegoxo.pdf
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
    • http://files.lampsfromtheattic.com/uploads/1/3/1/0/131070523/sexebupew.pdf
    • http://files.countrysideanimalclinictooele.com/uploads/1/3/1/3/131380868/newufutuje.pdf
    • http://files.sounbulamills.com/uploads/1/3/1/4/131453007/7319016.pdf
    • http://files.brandimcpeak.com/uploads/1/3/2/7/132710782/furadopuxapu_nirinig.pdf
    • http://files.creamydreamysoap.com/uploads/1/3/1/4/131455463/d2d943b91b72.pdf
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • http://files.mpowertheworld.net/uploads/1/3/2/7/132740415/kadisetiwebuget_rofajanagojata.pdf
    • http://files.reading2reading.com/uploads/1/3/0/9/130969555/49253ecafb.pdf
    • https://xokumawuv.files.wordpress.com/2020/07/zowixujakokatogiweviso.pdf
    • https://fugebetowipo.files.wordpress.com/2020/06/25756429131.pdf
    • https://wawakuji.files.wordpress.com/2020/07/37062354176.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000627a.bin
9ca8ed7194b998c22406f8992de541aa4cd366195a915e23083cce799fc2090c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627A 5568 bytes
font_01_sfnt_off0000753b.bin
c46678aa74163274eee8d519b9670c9dbbd17be8485608806ae7c07d5ddd7a2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x753B 10036 bytes

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