Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a83fc09feffc897…

MALICIOUS

PDF

40.2 KB Authoring application: pdf-parser
MD5: b9cf5952998ade1debad9902ebe834c6 SHA-1: b3474a3ee7b6bbb7e97773d8ad5d46939fe2a18b SHA-256: 6a83fc09feffc8979bb150622a6911cfc9e8b53def00358518fb3882ace0836e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. This is indicative of a phishing or spam campaign designed to direct users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

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://staffordchamberofcommerce.com/uploads/1/3/0/2/130288557/ff9308d84cc.pdf
    • http://callandputoptions.net/uploads/1/3/0/7/130738596/xunineletatifewube.pdf
    • http://realmorrowpost.com/uploads/1/3/0/6/130620731/5fa578780.pdf
    • http://ghdate.com/uploads/1/3/0/3/130312920/mumivugunupatomunuwo.pdf
    • https://jobaketu.weebly.com/uploads/1/3/0/2/130271090/mokab_mugivuf_togapukosalotum_nalujekeka.pdf
    • http://banyantreeconsulting.co.uk/uploads/1/3/0/7/130739297/gapulugu_xaxukagix_dezufonuki_jukanupakiw.pdf
    • http://brainspaceclassroom.com/uploads/1/3/0/2/130291908/vofira-dugajudexud-sefidoduzas-pevad.pdf
    • http://romehighnews.info/uploads/1/3/0/5/130550833/632812.pdf
    • http://thehealthcoach.co.nz/uploads/1/3/0/6/130640047/6781dca29d.pdf
    • http://familylifecommunity.org/uploads/1/3/0/3/130323151/fagizudekidi.pdf
    • http://beyondhillco.com/uploads/1/3/0/4/130489727/130489727.html#comptia+network++certification+study+guide+5th+edition+pdf+free+download
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001354.bin
c957d860b5aa366615586052c7e443e565a7502a5e18f3f1d95a134bc025d6a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1354 8392 bytes
font_01_sfnt_off00004e76.bin
bdec3caeff600e2e82173508c884cf3706218d9a8acc5e84ab2dd5123dd72e8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E76 18860 bytes

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