Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66a62e6e92d035a…

MALICIOUS

PDF

42.7 KB Authoring application: pdf-parser
MD5: afbec58ac272464af5007fcb3cb345c7 SHA-1: 2db03278d223d1c8380686dee4ae9e31490a7338 SHA-256: a66a62e6e92d035a30ce0eb243a02d65112e358c1e1455dc7156d096e3c7ee9a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The primary attack pattern involves directing users to a link farm of potentially malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://seattleyouthbaseball.com/uploads/1/3/0/6/130640006/zuwetabawaren-fijivivawo.pdf
    • http://4ufurnituredesign.com/uploads/1/3/0/4/130490488/7254338.pdf
    • http://riveflowyoga.com/uploads/1/3/0/5/130539714/depopuleb.pdf
    • http://pb-nn.com/uploads/2020/01/28/719c8803d1.pdf
    • http://aminomassage.com/uploads/1/3/0/4/130435658/buboxe-gegox-foweta.pdf
    • http://gumipeno.pharmaexpo.tech/uploads/2020/01/28/xipalimaguwebaxoxuti.pdf
    • http://merosound.com/uploads/1/3/0/2/130287989/2626437.pdf
    • http://masesusif.mavitiklisayfa.com/uploads/2020/01/28/rumupojuviz.pdf
    • https://giwekusapit.weebly.com/uploads/1/3/0/5/130544070/gipekixixativen.pdf
    • http://apsolutionsllc.net/uploads/1/3/0/3/130323131/9899326.pdf
    • http://divineemergence.com.au/uploads/1/3/0/2/130270941/wiripikiwudil-gipof-dimorugonoruxe-gowetile.pdf
    • http://zedozowale.agicole-acces.com/uploads/2020/01/28/vakuv-vaninoviwerojop-vareg-nuwodixowajepu.pdf
    • http://agentflamingo.com/uploads/1/3/0/6/130604113/vepab_bizakuzunum.pdf
    • http://voyagescimatur.com/uploads/1/3/0/6/130620981/4312062.pdf
    • http://dp360crrn.com/uploads/1/3/0/3/130379638/3a12cd3021c5.pdf
    • http://corridormanchester.com/uploads/1/3/0/6/130621152/24567e7c1d.pdf
    • https://lisafadew.weebly.com/uploads/1/3/0/5/130539412/7ec06ce9c.pdf
    • http://cityglush14.icu/uploads/2020/01/28/salujop.pdf
    • http://captainsclub.net/uploads/1/3/0/6/130620142/3334130.pdf
    • https://wupalefepotekuv.weebly.com/uploads/1/3/0/4/130436441/jirixetalo.pdf
    • http://ministerioslagloriaestuyajesus.org/uploads/1/3/0/5/130547576/nidakogosafibib-simuboli-kevovisofozikaz-zawisitafut.pdf
    • http://michiganreflexology.com/uploads/1/3/0/6/130639450/9b3344.pdf
    • http://kaxalexu.zarogkol.top/uploads/2020/01/28/8346341.pdf
    • http://baseballtoolkit.com/uploads/1/3/0/2/130289171/gipuz_fofod_jejodovezam_genesu.pdf
    • http://diabetest1ireland.com/uploads/1/3/0/5/130538959/130538959.html#falcon+air+rifle+silencer
    • http://kaxalexu.zarogk

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000017c8.bin
8aa02207e0405d5bf2ca719f046ac44bff15def43d6179353b10406e2f0f77ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17C8 9100 bytes

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