Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5cfc04f4e78cd2f…

MALICIOUS

PDF

36.1 KB Authoring application: LibreOffice
MD5: 2cddd8d0d500a7c9c019255e7a64d485 SHA-1: ad75953e47f468f9fca04258ed764981c94b30fb SHA-256: b5cfc04f4e78cd2fa5396556fa0bbc8d2f72e5f8ba42538eed63e664bfb1b4e8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The document body, though truncated and containing garbled text, mentions 'Gene therapy sickle cell company', which could be a lure. The primary attack pattern involves redirecting users to these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://altus-capital.org/uploads/1/3/0/5/130551696/sakatufofebari.pdf
    • http://lakewatchoutdoors.com/uploads/1/3/0/7/130776841/9794075.pdf
    • http://harrisonashtonphoto.com/uploads/1/3/0/5/130589165/sezodijixe.pdf
    • http://782elm.com/uploads/1/3/0/5/130590357/jarudifedigifed_vipopibofo_vaxerawejeg_loxubemutuxiju.pdf
    • http://alonbibring.com/uploads/1/3/0/4/130436181/9044038.pdf
    • http://yogurtinloveclt.com/uploads/1/3/0/7/130738512/7082875d40394.pdf
    • http://moringamaster.life/uploads/1/3/0/3/130313564/7388307.pdf
    • http://mx.neilhuber.com/uploads/1/3/0/2/130272955/saxofasoxuxopuv.pdf
    • http://beautywayuk.com/uploads/1/3/0/6/130605369/3575ea044.pdf
    • http://www.jess-cbd.com/uploads/1/3/0/7/130775962/paxutel-xafadoxu.pdf
    • http://thejoyceapp.com/uploads/1/3/0/5/130545484/gonamazemuso_xibotesonetu.pdf
    • http://technicalsalestraining.net/uploads/1/3/0/6/130639950/rakalop-gawasiv-reravazoleved-lubav.pdf
    • http://3mtruedefinition.com/uploads/1/3/0/6/130621472/lexitix.pdf
    • http://riddlemethisdesigns.com/uploads/1/3/0/6/130621758/0c6d9a5.pdf
    • http://i05g5.salon225.com/uploads/1/3/0/5/130590126/130590126.html#gene+therapy+sickle+cell+company
    • http://thejoyceapp.com/uploads/1/3/0/5/130545484/gonamaze
    • http://sprentic.people.ua.edu/uploads/1/3/0/6/130604706/1267997.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003451.bin
0fd914b0385de323442602bda89a0413aaa0cf400753f96f196b895eb7fe6228		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3451 7188 bytes

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