Malicious PDF — malware analysis report

Static analysis result for SHA-256 7956e03098b26c82…

MALICIOUS

PDF

57.1 KB Created: 2021-04-09 04:36:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbc0423977bf14de02f4ece85580be9b SHA-1: 57ea7fbfd223a4e81f015ac252f34c8da1130b07 SHA-256: 7956e03098b26c82d686137c0ce47d1faa15790692634d708d5072f5f69df6ec
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to potentially malicious or unknown domains, suggesting an attempt to redirect users to phishing sites. The document body, though heavily obfuscated, contains keywords related to 'bricklaying techniques' and 'pdf', likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://oaklandchildcare.org/sites/default/files/webform/65810703597.pdf
    • https://www.jwico.com/sites/default/files/webform/69174909787.pdf
    • http://seiary.com/sites/default/files/webform/rec/wugibizipudaxejomite.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/zolevijovexoneda.pdf
    • http://cicatsalud.com/html/sites/default/files/webform/foxegedukob.pdf
    • https://aboss.by/sites/default/files/webform/32639212941.pdf
    • https://ambrose.edu/sites/default/files/webform/mamak.pdf
    • https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/fifomibap.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=tipos+de+aparejos+de+ladrillos+pdf
    • https://thesanfordschool.asu.edu/sites/default/files/webform/moxogugudufagelo.pdf
    • https://www.healthdata.org/sites/default/files/resumes/fanonexujezurexuli.pdf
    • https://printandmail.princeton.edu/system/files/webform/50156150340.pdf
    • https://printandmail.princeton.edu/system/files/webform/68272747422.pdf
    • https://thesanfordschool.asu.edu/sites/default/files/webform/63066688876.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d447.bin
dca39f7d9487deeacee5bbed36bb10d1adf70b1725dd359a342e742b395c8370		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD447 5060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.