Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a168e07d979de27…

MALICIOUS

PDF

37.5 KB Authoring application: PDFBox
MD5: 56d11e4b95b08e3000030359ff220323 SHA-1: 7716241bab555198b1200323a12697c08dd1081a SHA-256: 4a168e07d979de272331b6e41a4d15f61b3322e6cb1ac4703d3e60ff0102b0b2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for SEO poisoning or phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious intent. No scripts were extracted from this sample, but the extensive link farm suggests a redirection or download mechanism is in place.

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://nealyibclc.com/uploads/1/3/0/5/130588407/pexebideper-suren-zidomamejir-mebej.pdf
    • http://mrandersonllc.com/uploads/1/3/0/5/130543366/kagazebapapo-likiwone.pdf
    • http://disneychristmasparty.com/uploads/1/3/0/6/130622041/2757280.pdf
    • http://amredco.com/uploads/1/3/0/8/130814085/fugida_bukavegasotaw.pdf
    • http://finelinefloral.com/uploads/1/3/0/7/130776661/3db18.pdf
    • http://alevelapps.com/uploads/1/3/0/4/130436299/019227b.pdf
    • http://www.freshcaandco.com/uploads/1/3/0/7/130739830/sovuginok.pdf
    • http://pointsoffivetarot.com/uploads/1/3/0/5/130550796/947926.pdf
    • http://mochisprite.com/uploads/1/3/0/5/130541131/1769317.pdf
    • http://a1412531xstreamtravel.xsideas.com/uploads/1/3/0/6/130639554/d33540.pdf
    • http://alternativemedicine24.com/uploads/1/3/0/5/130551477/bofeb-rujodu-tizikafirew-pomivolovosaxit.pdf
    • http://naillogicinstitute.com/uploads/1/3/0/3/130379424/retatosexaw.pdf
    • http://engbets.com/uploads/1/3/0/2/130272330/1a0f62.pdf
    • http://proview-s3.com/uploads/1/3/0/5/130551164/sejotago_gavobuvazof.pdf
    • http://triciazoellerauthor.com/uploads/1/3/0/3/130379294/lugobuk_xusiva_lobaw_ledikikufig.pdf
    • http://nfstoryboard.com/uploads/1/3/0/4/130483469/3717386.pdf
    • http://bigredhen.org/uploads/1/3/0/7/130740174/50c6e.pdf
    • http://greensburgcyclery.com/uploads/1/3/0/8/130874641/guvoputom-vaboxug.pdf
    • http://beltranonsite.com/uploads/1/3/0/7/130776078/7044b630b.pdf
    • http://txt51.slpny.com/uploads/1/3/0/4/130483937/130483937.html#active+reading+strategies+examples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003442.bin
db07c36294a034f5f1a4e33f5a8463a9dbe702ca4d0993787f25ba9461d002da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3442 7736 bytes

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