Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b90bef3a87c185…

MALICIOUS

PDF

37.7 KB Authoring application: PDFBox
MD5: 3cd227f165b76ff093c54b85ec047836 SHA-1: cf834f9bf628257106e9f2d64b30ab513fa7336f SHA-256: e6b90bef3a87c185b84d2343784b36ecbceb5bc2728167cc13a79a6fea1ef1f7
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 supports a malicious intent. The primary goal appears to be directing users to a network of suspicious PDF files hosted on various domains, likely for phishing or to serve further malicious content.

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://eaglehealthinsurance.com/uploads/1/3/0/6/130621257/rupalasola_fepojafasis_xotul_fokediduredubij.pdf
    • http://nexts-lab.com/uploads/1/3/0/2/130289256/zedobedefales.pdf
    • http://sisstar289.com/uploads/1/3/0/5/130544009/mizowulizova_lidiba_kemozik_ronejitomo.pdf
    • http://thecherigroves.com/uploads/1/3/0/6/130639653/kenubepav.pdf
    • http://aroundthehousehandymanservices.com/uploads/1/3/0/4/130476943/girefavusupada.pdf
    • http://mysitelive.org/uploads/1/3/0/5/130541073/rerumavejis.pdf
    • https://gutuwofugojo.weebly.com/uploads/1/3/0/6/130603906/wigepevowimu.pdf
    • http://knvanna.ru/uploads/2020/01/29/3241605.pdf
    • http://skinrenewsolution.com/uploads/1/3/0/2/130272247/1261003.pdf
    • http://oilbalance.com/uploads/1/3/0/4/130436006/metofuwik-xefelizuki-rejuroreki-votuvujule.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/4/130483348/130483348.html#ang+pagkakaiba+ng+tabloid+sa+broadsh

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001294.bin
829990bfc635ddc00e6c5859057ef18677361a3b9d43acd1ce1299aa82922d66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1294 7536 bytes
font_01_sfnt_off00004c54.bin
65ca2fa633a49bc637c245e3469a24bec82cbb291b9200d770c42ee2df1588ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C54 16096 bytes

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