Malicious PDF — malware analysis report

Static analysis result for SHA-256 034628b8e017b38a…

MALICIOUS

PDF

37.9 KB Authoring application: pdf-parser
MD5: b64830117c6326158bb3a1ff35795c06 SHA-1: 05ef4c8f84745b65b8d18a7fbc3f078980d69020 SHA-256: 034628b8e017b38aa6cf1f314579d723f19e4348c94371073dd1d1c8abd22457
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection further confirm the malicious nature of the file, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall-7605656-0.

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://drainetfissures.com/uploads/1/3/0/7/130775294/aa40d.pdf
    • http://churchconstructionintercessors.org/uploads/1/3/0/2/130289339/zelakilumabif.pdf
    • http://choicecutengraving.com/uploads/1/3/0/2/130271132/busukoravafo.pdf
    • http://cmm-programmer.com/uploads/1/3/0/7/130776276/pavovarujajakir.pdf
    • http://tranquil-touch-healing.com/uploads/1/3/0/7/130776735/c66bf9d3c5644c4.pdf
    • http://themavins.net/uploads/1/3/0/2/130289493/6699792.pdf
    • http://www.spunkii.co/uploads/1/3/0/8/130813320/rizolomosa-xorajevibaka-lefozubemojeku.pdf
    • http://mainstreetnewjersey.net/uploads/1/3/0/6/130640020/720771.pdf
    • http://rikkibox.com/uploads/1/3/0/6/130639115/9842812.pdf
    • http://angelasoffice.com/uploads/1/3/0/4/130435581/fozowudoji_jufaniwiz.pdf
    • http://statussphere.com/uploads/1/3/0/9/130969041/ditasarugukixi.pdf
    • http://barnfreshcycles.com/uploads/1/3/0/5/130544230/rupasunarivalos-baven-ginotasugeb.pdf
    • http://bsmithcontracting.com/uploads/1/3/0/7/130740212/mupupakenosu.pdf
    • http://weiblespaintandwallpaper.com/uploads/1/3/0/5/130588943/0d81d9ae1.pdf
    • http://mydtronic.com/uploads/1/3/0/3/130324164/5873930.pdf
    • http://www.luxurylodingbylaura.com/uploads/1/3/0/7/130775106/wekuxujo.pdf
    • http://flyycollections.store/uploads/1/3/0/2/130270955/379972e0bd.pdf
    • http://673comoavenue.com/uploads/1/3/0/2/130287533/71fcb29b98d.pdf
    • http://realmorrowpost.com/uploads/1/3/0/6/130639922/rominefatusiga_wilukuvowebewu.pdf
    • http://cyannereviews.com/uploads/1/3/0/6/130639464/5388692.pdf
    • http://vistasonthegulf.com/uploads/1/3/0/5/130588195/22c179841f836.pdf
    • http://common-sense-government.org/uploads/1/3/0/2/130272280/zivigizenovuvomozi.pdf
    • http://pitch-dark.net/uploads/1/3/0/5/130542736/natizomitazulox.pdf
    • http://www.thebigbookoflittlestars.com/uploads/1/3/0/5/130542937/9837975.pdf
    • http://blackfilmcentre.org/uploads/1/3/0/2/130289317/130289317.html#pdf+resize+online+more+than+100mb

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e8.bin
ce1ba838c2d0f90dd1bfba1230cfc5949966c02719205e098123f06f335cd1c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x30E8 7752 bytes