Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c6ff188b1b3491…

MALICIOUS

PDF

36.7 KB Authoring application: pstoedit
MD5: 2cc1019754e9b1218148c5619a13cd4d SHA-1: 11888e761f86b3ddb673912a06c1a5f153d4233c SHA-256: 80c6ff188b1b3491b9558fb4639f4a438866e36379cd7869f177402e79fbe8df
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO abuse. No scripts were extracted, and the document body is heavily obfuscated, but the primary finding is the extensive link farm.

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://allans-automobiles.co.nz/uploads/1/3/0/7/130775605/92f2fdaa97906.pdf
    • http://ericdietrich.com/uploads/1/3/0/7/130775826/kixemanaluzi.pdf
    • http://emmycodes.com/uploads/1/3/0/5/130543377/nipolutovex.pdf
    • http://donnezonline.com/uploads/1/3/0/8/130813786/sunitusatosesig-xapefumimom-jezudagaj-zenilem.pdf
    • http://bellmor.us/uploads/1/3/0/6/130604836/2534778.pdf
    • http://tokeplusherbs.com/uploads/1/3/0/5/130539875/gorabuwejitivi.pdf
    • http://1682washington.com/uploads/1/3/0/6/130621210/451fa55a50ee.pdf
    • http://ocwpublishing.com/uploads/1/3/0/3/130379133/7781443.pdf
    • http://mjstead.com/uploads/1/3/0/5/130543394/jawofu_xebazexisuvaki_gosagiwowawus_gudabus.pdf
    • http://socialbutterflyslp.com/uploads/1/3/0/5/130588467/5043487.pdf
    • http://medicoz.com/uploads/1/3/0/3/130379651/dabulekifigol.pdf
    • http://tolhouse-design.com/uploads/1/3/0/5/130542902/fedinakevadan-wemizole.pdf
    • http://www.reggaeinnyc.com/uploads/1/3/0/6/130639605/272b2f83f.pdf
    • http://summaarquirectura.com/uploads/1/3/0/7/130776027/6130029.pdf
    • http://lilianbeautycenterspa.com/uploads/1/3/0/6/130620795/7661988.pdf
    • http://fightyourfriends.us/uploads/1/3/0/5/130551144/modoxufoponok_xaxujapesap_kilakofad_joxazin.pdf
    • http://stayusahotel-wb.devsite-1.com/uploads/1/3/0/4/130489122/130489122.html#abiotic+factors+of+deciduous+forest

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035dc.bin
8808a3131c8860fc580f2efa93d8328f4ee265c2c28802983be80716689ad4ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35DC 7068 bytes

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