Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0c68cf99c80f0d…

MALICIOUS

PDF

35.1 KB Authoring application: LibreOffice
MD5: b585a4fbfe411f5b9838804c63eea140 SHA-1: 385cfac054afe3554e1c5284b173e9c7fc0f5124 SHA-256: dc0c68cf99c80f0dab4e49d2e233565526dcf8e823d4522f83e4f42ad9bcc3a9
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with the primary heuristic identifying it as a PDF SEO link farm. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically classifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs, particularly the first one pointing to 'csgocave.net', are likely part of the phishing or malicious redirection chain.

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://csgocave.net/uploads/1/3/0/3/130324326/fikem.pdf
    • https://narojeli.weebly.com/uploads/1/3/0/6/130603945/9067482.pdf
    • http://zamube.ww7ww.top/uploads/2020/01/27/9645282e86ff.pdf
    • http://nologes.macronbit.com/uploads/2020/01/28/8177894.pdf
    • http://millermediafilms.com/uploads/1/3/0/3/130379289/vilufejuxigi_tovebasusurej_pirowevuvamu_buxewesu.pdf
    • http://mpowerbuilding.ca/uploads/1/3/0/4/130476447/lasipufugovuw-xadaxamevow-zavelobavud.pdf
    • http://kibagaloda.vezirgroup.com/uploads/2020/01/28/wamefetiruvawulu.pdf
    • http://annpiquette.com/uploads/1/3/0/6/130605502/sotimesowore.pdf
    • http://zakarolu.betasproject.online/uploads/2020/01/27/ritudavofupovuz.pdf
    • http://sacredhearts.ca/uploads/1/3/0/6/130620150/zebuxan-rojegok.pdf
    • http://sftutoring.org/uploads/1/3/0/5/130550682/9032393.pdf
    • https://nolupunitis.weebly.com/uploads/1/3/0/5/130550859/85334f9ac4.pdf
    • http://nstuk.com/uploads/1/3/0/4/130476346/kafori.pdf
    • http://wamukob.kcegamma.ru/uploads/2020/01/27/3250562.pdf
    • https://zosedadomator.weebly.com/uploads/1/3/0/2/130271035/36cbaf4f33486.pdf
    • http://securitycitizen.com/uploads/1/3/0/5/130588202/lobepup.pdf
    • https://zogorojadodu.weebly.com/uploads/1/3/0/2/130287953/neweja.pdf
    • https://dajuxamadodal.weebly.com/uploads/1/3/0/6/130605387/cb601ef43ab.pdf
    • http://annarbormothertree.com/uploads/1/3/0/5/130590279/6cb3522508721c.pdf
    • http://alphaomegainvestmentsllc.com/uploads/1/3/0/6/130621060/194669.pdf
    • https://bubevuwuxena.weebly.com/uploads/1/3/0/5/130590770/zozap.pdf
    • http://ohioawnings.com/uploads/1/3/0/6/130605433/72a1eab8f13.pdf
    • http://middletonandnewbigginparishcouncil.org/uploads/1/3/0/6/130604740/mejafavatuz.pdf
    • http://sharedtravel.voyagerwebsites.com/uploads/1/3/0/2/130270932/130270932.html#sap+abap+function+reuse_alv_grid_display
    • http://middletonandnewbigginparishcouncil.org/uploads/1/3/0/6/1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016d6.bin
c20540f84b8656af37c858c0421b7f45f8a26d90809080ee3d869822f5fdb425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16D6 7956 bytes

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