Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a268a130405b623…

MALICIOUS

PDF

38.4 KB Authoring application: pdf-parser
MD5: 00732d56a15f12cd3fc8b7af955a0831 SHA-1: f036b36097f65b93acaab5f38fc4a5dc16adf2be SHA-256: 2a268a130405b623005feb1dfdf7006b0a6b803d9a675f9900830c7df8d321ca
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique commonly used for SEO poisoning or distributing malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body text is heavily corrupted and does not provide further context, but the heuristic firings and numerous external links are sufficient to assess the attack pattern.

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://cococolumbia.com/uploads/1/3/0/5/130540397/favetiliw.pdf
    • http://yourluckieday.com/uploads/1/3/0/6/130604348/6657736.pdf
    • http://tentmakers.co/uploads/1/3/0/6/130604470/vagonor.pdf
    • http://premiumrooms.com/uploads/1/3/0/3/130379635/lobibemode-juwufunumukanif.pdf
    • http://redriverministries.org/uploads/1/3/0/2/130274322/7190916.pdf
    • http://bodysoulcomplementarytherapies.com/uploads/1/3/0/8/130814960/59604.pdf
    • http://cioga.com/uploads/1/3/0/4/130476012/godobikiburimopazez.pdf
    • http://smuphideltatheta.com/uploads/1/3/0/7/130776334/385074.pdf
    • http://muscarii.com/uploads/1/3/0/3/130379625/5860926.pdf
    • http://cinderscapesorl.com/uploads/1/3/0/5/130589108/4077964.pdf
    • http://eurekasinc.com/uploads/1/3/0/5/130590133/dadered-vupazanoxa-fomaxox.pdf
    • http://abra-maquillos.com/uploads/1/3/0/6/130605010/dupakowitoporo_dobeka.pdf
    • http://petesfishtales.com/uploads/1/3/0/7/130775382/wokepunogikemu.pdf
    • http://milestoneshomeinspections.net/uploads/1/3/0/3/130323818/993927.pdf
    • http://riverbendexteriorsllc.com/uploads/1/3/0/8/130814984/suvogusavarone_tabukif_jalatupo.pdf
    • http://chloecustomcollections.com/uploads/1/3/0/7/130776111/0a306f45a5b6.pdf
    • http://catalog.koehlerscale.com/uploads/1/3/0/7/130775871/deae1856410b.pdf
    • http://dailywritingtip.com/uploads/1/3/0/7/130740533/rirowu.pdf
    • http://herbalhealingformulacream.com/uploads/1/3/0/2/130273987/roruxela.pdf
    • http://itsmyland.net/uploads/1/3/0/2/130270971/xulowoluzenodu-xodolonok-jokanigixo-sajorov.pdf
    • http://skinsugarrx.com/uploads/1/3/0/8/130813381/pebewi_vosivufebe_mizula_wowemozu.pdf
    • http://nobleworksfunnycards.net/uploads/1/3/0/5/130589237/f4668653d72.pdf
    • http://chloral21.pleasingfood.com/uploads/1/3/0/6/130621167/130621167.html#rapid+sand+filter+design+calculations+pdf
    • http://itsmyland.net/uploads/1/3/0/2/13

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003503.bin
88b35c0755973e702bc481c49f787f22838c70595c20df01790623bd6ff2efff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3503 7640 bytes

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