Malicious PDF — malware analysis report

Static analysis result for SHA-256 422dee00186c5902…

MALICIOUS

PDF

37.0 KB Authoring application: Nitro PDF
MD5: e799848cf3887eb95daaf5df0fe1e9ae SHA-1: eaf38cf2174542149285650c1823e828ff075fb4 SHA-256: 422dee00186c5902dfb70776982064b6ef20b69a5dbf612ce8e14ced6e3a0442
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files hosted on various domains, indicative of a link farm or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The embedded URLs are the primary IOCs, pointing to a network of potentially malicious 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://lifeinprinceton.com/uploads/1/3/0/7/130738619/6e859f362a65e.pdf
    • http://christinefawson.net/uploads/1/3/0/3/130324164/3d18f134fa.pdf
    • http://legacyhousesouthafrica.com/uploads/1/3/0/6/130620233/rikabuboxo_dafovasij_nanitujuteta_dawegufugutozaj.pdf
    • http://johannakarasconsultinginc.com/uploads/1/3/0/8/130813030/7540162.pdf
    • http://fioritoepartners.com/uploads/1/3/0/5/130541137/zidigedeg-nosajumita-panos-mawoxomurumes.pdf
    • http://thevillagemiami.com/uploads/1/3/0/5/130588772/5ce865.pdf
    • http://bradeaton.net/uploads/1/3/0/6/130605506/jerolozonuvagarudop.pdf
    • http://swankyfork.com/uploads/1/3/0/5/130539702/6a371d42.pdf
    • http://www.hamptonlodge.org/uploads/1/3/0/5/130551461/kutiranosujolarazuda.pdf
    • http://www.conseiltp.fr/uploads/1/3/0/4/130475996/3da4cce98a.pdf
    • http://dokkanaccountseller.com/uploads/1/3/0/7/130775443/kakolipizi-zurojolesen.pdf
    • http://maketorontohome.net/uploads/1/3/0/5/130588893/5502986.pdf
    • http://goonmud.com/uploads/1/3/0/6/130620952/tulawexavatod.pdf
    • http://structureinsurancegroup.com/uploads/1/3/0/6/130639042/wosisixasarodo-jivulakuwow-karegotesirepij.pdf
    • http://host180.carmichaelnl.com/uploads/1/3/0/7/130740550/130740550.html#cam%C3%A9ra+sport+sony+hdr+as50b

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000342f.bin
d1eb09a10e7f1b615e81eff02495e995a1df345a04d1122c4b7a29d242d43392		 pdf-font-stream PDF embedded font (sfnt) at offset 0x342F 8736 bytes

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