Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b82e1a5a14d0cfb…

MALICIOUS

PDF

38.2 KB Authoring application: Nitro PDF
MD5: ced4ac8763de0ab329da7223fe6ead5b SHA-1: c50375b1b9603d3c07c8817cc771e13d1c929912 SHA-256: 7b82e1a5a14d0cfbed0ab60a72ab56195b39fb2defde9bbffe2970a5ea712574
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. This technique is often used for SEO manipulation or to distribute malicious payloads. The ML classifier and ClamAV detection further support the malicious nature of this file. The embedded URLs are the primary IOCs.

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://banburymotortraders.com/uploads/1/3/0/6/130604720/899083.pdf
    • http://fflibraries.net/uploads/1/3/0/7/130740456/3502761.pdf
    • http://spikedscoops.com/uploads/1/3/0/6/130604445/357d75.pdf
    • http://www.monaventurephoto.com/uploads/1/3/0/2/130273812/7fadd59c29.pdf
    • http://babybirthcharts.com/uploads/1/3/0/4/130488920/mizewuxijuderupan.pdf
    • http://abullfrogstudio.com/uploads/1/3/0/3/130323806/folubufodozif.pdf
    • http://www.1plath.com/uploads/1/3/0/2/130291786/lawokakazopojipipo.pdf
    • http://honeypeelfarm.com/uploads/1/3/0/5/130589360/senevarijolumaf-lidumedopaledo-begovegot.pdf
    • http://www.bipsss.com/uploads/1/3/0/3/130323538/vepakidaduf.pdf
    • http://hart-ware.ca/uploads/1/3/0/4/130476348/latovezolosesajajuk.pdf
    • http://spiroslouis.org/uploads/1/3/0/4/130488322/9022029.pdf
    • http://wwonderwriter.com/uploads/1/3/0/6/130639545/mibepuviwub-kesepol-laxavepi-jokad.pdf
    • http://bigleaffarms.com/uploads/1/3/0/7/130775557/3213845.pdf
    • http://portalfarmaceutico.net/uploads/1/3/0/3/130313500/pegumabenaw_gagurirexexoza_xititokotapageg_manenelorufa.pdf
    • http://average-adam.com/uploads/1/3/0/7/130775422/kubalepupotujoxobuz.pdf
    • http://blazeon.ca/uploads/1/3/0/4/130476185/mufod.pdf
    • http://carrizalesforwarding.com/uploads/1/3/0/7/130738647/wowelegoki.pdf
    • http://kimrogersforcouncil.com/uploads/1/3/0/4/130483578/984504.pdf
    • http://newdaymetaphysical.com/uploads/1/3/0/5/130539034/5334578.pdf
    • http://pawbehaviour.com/uploads/1/3/0/8/130814078/7e4fb0.pdf
    • http://thesoundmusicgroup.com/uploads/1/3/0/6/130640059/f82ae701518ec.pdf
    • http://hazeperformance.com/uploads/1/3/0/7/130740624/sugojugabig_buzixiduval.pdf
    • http://99smsm.brdge.org/uploads/1/3/0/3/130379770/130379770.html#o+alienista+livro+pdf
    • http://kimrogersforcouncil.com/uploads/1/3/0/4/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000325e.bin
79a9b3e51139c457fbe9c551b1fd5e177adf4e3921553f11add18f6c7a6a843c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x325E 9844 bytes

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