Malicious PDF — malware analysis report

Static analysis result for SHA-256 a532ef7d41f91d60…

MALICIOUS

PDF

37.6 KB Authoring application: Pdftk
MD5: 2a3a5e1a885097d26f2d5bd2c009e075 SHA-1: a9d34a944f6e87bf17b5dfabf3a43e2ec523d6f3 SHA-256: a532ef7d41f91d600d732f416571ac775701f5a3a5c3ae22137b3e07fa4fb2a8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents hosted on various domains. This technique is often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://theboutiquehilo.com/uploads/1/3/0/5/130540453/wajutidudesux_radej.pdf
    • http://gesproit.com/uploads/1/3/0/8/130813837/791916.pdf
    • http://alinekostrewa.com/uploads/1/3/0/8/130813332/24d96ebd0a40.pdf
    • http://giantcoffeepress.com/uploads/1/3/0/6/130639133/b747290cb1.pdf
    • http://mountain-plumbing.com/uploads/1/3/0/5/130551226/6775675.pdf
    • http://mytelmed.com/uploads/1/3/0/7/130739330/rumurajug_buladoxugamati_takupaditomabur.pdf
    • http://danielcunningham.com/uploads/1/3/0/2/130288458/zogalon.pdf
    • http://sophisticatesmedia.com/uploads/1/3/0/6/130621613/luvurumupokenokamito.pdf
    • http://sunlightscience.com/uploads/1/3/0/5/130544953/sowuzavo_giduti_zupemigiwuw_tafuk.pdf
    • http://duilawvt.com/uploads/1/3/0/3/130379315/3409558.pdf
    • http://h4investments.com/uploads/1/3/0/2/130288338/jotadimasukazefepope.pdf
    • http://supplementsformedicare.com/uploads/1/3/0/2/130271232/vojetebefiku.pdf
    • http://hotelsthepas.net/uploads/1/3/0/6/130621003/403fddd.pdf
    • http://reikoheartland.com/uploads/1/3/0/5/130590154/33245a6fd2.pdf
    • http://springglade.com/uploads/1/3/0/6/130639396/08f636bfc8.pdf
    • http://lucernecountryclubrvpark.com/uploads/1/3/0/6/130639249/bixodupekenifalojube.pdf
    • http://lylagracehollis.com/uploads/1/3/0/6/130604098/beduxan_zunovinubi_vawubas_bivufo.pdf
    • http://eewade.com/uploads/1/3/0/4/130490106/motin.pdf
    • http://arqbuildingdesign.com/uploads/1/3/0/3/130379475/bipira_wujogozigudalal_fawurusukix_xapetudem.pdf
    • http://yinghuangguojixinyuhao.br3h.com/uploads/1/3/0/2/130287882/130287882.html#reduce+size+of+pdf+in+acrobat+pro
    • http://lylagracehollis.com/u

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033e4.bin
86c6d90b87f7e0ee29553027d7c10a58560c02872e67dedddab110bb011edef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33E4 8076 bytes

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