Malicious PDF — malware analysis report

Static analysis result for SHA-256 d91bdba792b78bf1…

MALICIOUS

PDF

42.0 KB Authoring application: Poppler-utils
MD5: 97bc52f32351cc4a0f74d15738a9f5d3 SHA-1: 9a4c522c47c8ecfbf9a9f9770954f9bf30050c61 SHA-256: d91bdba792b78bf17b87b06f991977c881c5df63c7e6930668b005cac0f851e6
150 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 other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted, and the document body is heavily obfuscated, preventing a more detailed analysis of the immediate user-facing content.

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://veronicaadams.com/uploads/1/3/0/7/130776492/dutigorovoboze.pdf
    • http://katsimicpsychicconsultant.com/uploads/1/3/0/3/130313567/5f8b3d8.pdf
    • http://getautomotiv.com/uploads/1/3/0/2/130272240/74a37f3a3c75d.pdf
    • http://awinnerswayllc.com/uploads/1/3/0/9/130969330/sikiraben-pokiwemisi-jofovamedijogu.pdf
    • http://nworegon.net/uploads/1/3/0/8/130813896/werovuvikodad.pdf
    • http://goldendealusa.com/uploads/1/3/0/2/130272886/wegaj.pdf
    • http://metallicblackrecords.com/uploads/1/3/0/7/130739173/2660528.pdf
    • http://www.willowlakesestates.com/uploads/1/3/0/3/130379319/geginewoxo.pdf
    • http://fisherrentalproperties.com/uploads/1/3/0/2/130271045/zowewotafomiz.pdf
    • http://citykittyfurniture.com/uploads/1/3/0/7/130738893/7060073.pdf
    • http://yposf.com/uploads/1/3/0/6/130621123/259c1e3680177.pdf
    • http://moralguard.org/uploads/1/3/0/7/130738704/pubilimawilew.pdf
    • http://moldaufamily.com/uploads/1/3/0/2/130288318/307395.pdf
    • http://myblissparty.com/uploads/1/3/0/4/130435998/4a7eb7d9d6abae6.pdf
    • http://www.robynrees.co.za/uploads/1/3/0/5/130551251/3643889.pdf
    • http://aiglobal.ca/uploads/1/3/0/8/130874501/1821125.pdf
    • http://avispire.co.uk/uploads/1/3/0/4/130483376/1347278.pdf
    • http://www.kwildphoto.com/uploads/1/3/0/7/130775589/1395730.pdf
    • http://neurotherapycenterva.com/uploads/1/3/0/7/130776103/galejenozutisim_fegow_risef.pdf
    • http://mariesnook.net/uploads/1/3/0/2/130271126/130271126.html#2nd+conditional+speaking+activity

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004387.bin
928dda723cc10761f17105dee758ad3167b76a30fc19d6a32731cb87daede5a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4387 9076 bytes

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