Malicious PDF — malware analysis report

Static analysis result for SHA-256 06391ed53da91d54…

MALICIOUS

PDF

40.9 KB Authoring application: Pdftk
MD5: b7fbaba84155f86194f489ea68e4ca59 SHA-1: d3e8b5fb1c72f5aa81ba0ab3ef37873caf9321a4 SHA-256: 06391ed53da91d541989ba798cc80985b540b8bc0cfe9efa02d17e28456410bf
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports its malicious nature. No scripts were extracted, but the extensive link farm suggests an attempt to redirect users to potentially malicious sites.

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://kazumus.cheapoffice.ru/uploads/2020/01/27/37a0df5bc8a712.pdf
    • https://lozupuzelape.weebly.com/uploads/1/3/0/6/130604488/xelebukirapafotonot.pdf
    • http://tupa.vinil-koritsa.ru/uploads/2020/01/29/f229e13a5c8.pdf
    • http://couponrupee.in/uploads/2020/01/28/tenadupigeterolafit.pdf
    • http://kalukowa.cherepah.com/uploads/2020/01/29/lozoso_lamurefo.pdf
    • https://domovinebo.weebly.com/uploads/1/3/0/5/130543025/jekipon-bakopamoke-guwezadod-sevut.pdf
    • http://leslegendes.net/uploads/1/3/0/5/130544413/4239616.pdf
    • http://fuluret.pp-offer.fun/uploads/2020/01/27/7053819.pdf
    • https://nadozikinekos.weebly.com/uploads/1/3/0/4/130475938/kifezedamivufekifowo.pdf
    • http://salecheb.ru/uploads/2020/01/28/255a7265072.pdf
    • http://citizensarmory.net/uploads/1/3/0/5/130543980/aa93792723.pdf
    • http://zifutaweda.saojose.online/uploads/2020/01/29/pikolajetowor.pdf
    • http://silexor.solomonka.online/uploads/2020/01/29/70cd0.pdf
    • https://sifimotasi.weebly.com/uploads/1/3/0/6/130603753/3d3f43.pdf
    • https://wagesozowu.weebly.com/uploads/1/3/0/4/130483872/fekikefupiw-womufubupajenuz-xotoraxivopax.pdf
    • http://skazimut.ru/uploads/2020/01/27/patuxer.pdf
    • http://xamil.wfcrus.com/uploads/2020/01/27/6451177.pdf
    • http://mojewaso.techindulgence.com/uploads/2020/01/28/togisosis-widatup-zofijiworabole.pdf
    • http://xiz.blogfule.ru/uploads/2020/01/28/4939440.pdf
    • http://juvevizen.dom63.su/uploads/2020/01/27/5ae0c7b.pdf
    • https://kujumuwapokagi.weebly.com/uploads/1/3/0/5/130589241/1312335.pdf
    • http://marikacleaningservice.com/uploads/1/3/0/5/130590463/130590463.html#dji+phantom+3+advanced+review

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015d1.bin
002a6b3c9547216cc0ee622c82d4c1506a30ee38b6eb8e4a93f0b3155977bced		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15D1 7680 bytes

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