Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7280b4403157e1…

MALICIOUS

PDF

58.8 KB Authoring application: Pdftk First seen: 2020-09-07
MD5: af34ee6620f1e884fbad800953d39931 SHA-1: 5be0f5966133e07a3e3d353944285af770595960 SHA-256: bf7280b4403157e1f1cd38074667589a75c88e807b96f6945df6cbb30d0d89bb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was identified as malicious by ClamAV and a machine learning classifier. The primary attack vector appears to be a link farm, with numerous embedded URLs pointing to external PDF files. This technique is commonly used to distribute phishing content or redirect users to sites hosting malware. No scripts were extracted from this sample, and the document body contained mostly obfuscated or irrelevant text.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://beyondbeliefthebook.com/uploads/1/3/0/5/130545753/57087b0ecd8.pdf In PDF document text
    • http://loftzone.net/uploads/1/3/0/5/130539458/cdd89de098.pdfIn PDF document text
    • http://www.lesmisauckland.co.nz/uploads/1/3/0/6/130621645/61c652509.pdfIn PDF document text
    • http://kirillian.net/uploads/1/3/0/6/130621938/9006311.pdfIn PDF document text
    • http://www.alexmeers.com/uploads/1/3/0/6/130639357/2005480.pdfIn PDF document text
    • http://oliviawinter.net/uploads/1/3/0/6/130605119/2597610.pdfIn PDF document text
    • http://mail.creatingsarah.com/uploads/1/3/0/4/130488543/1879879.pdfIn PDF document text
    • http://wenyingzhizunyulechengwanbaijiale.f18.ebkf.org/uploads/1/3/0/2/130288002/6653758.pdfIn PDF document text
    • http://shogiforum.net/uploads/1/3/0/3/130313299/ae94b021cde89.pdfIn PDF document text
    • http://nesyb.net/uploads/1/3/0/2/130272649/muwuvep-banetamutuzusiw-pufupetokuvoma-sumirov.pdfIn PDF document text
    • http://bushnelltents.com/uploads/1/3/0/6/130621261/1490719.pdfIn PDF document text
    • http://kumukaliportfolio.com/uploads/1/3/0/7/130776781/fdb4aaebad2.pdfIn PDF document text
    • http://trainingcenterchurch.org/uploads/1/3/0/5/130551687/91e6cc9.pdfIn PDF document text
    • http://lidiabrito.com/uploads/1/3/0/7/130775092/9118314.pdfIn PDF document text
    • http://www.buildtherelationship.com/uploads/1/3/0/2/130270907/towiwelenewogur.pdfIn PDF document text
    • http://ausprodetail.com/uploads/1/3/0/2/130288939/5195525.pdfIn PDF document text
    • http://lovelyinkbrowdesign.com/uploads/1/3/0/6/130620936/d71761be0c8a069.pdfIn PDF document text
    • http://babyfreebies2020.com/uploads/1/3/0/5/130588654/vumobujefef.pdfIn PDF document text
    • http://piropeandopueblo.com/uploads/1/3/0/7/130775278/c6d85a85.pdfIn PDF document text
    • http://gjh40.slpny.com/uploads/1/3/0/6/130604610/130604610.html#anticholinergic+cause+glaucomaIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC 8328 bytes
SHA-256: 48a2ad8538c571bfba2f3abdc2db8182b4f83c5dcc3dfa26840fc5aecfd7bbee
font_01_sfnt_off0000969b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x969B 16148 bytes
SHA-256: 61ca593122bdf9f8d2de89784c713a2b278bdd5b054eff5a59c50fd3ef05b3a5

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