Malicious PDF — malware analysis report

Static analysis result for SHA-256 9747343f0a002cbf…

MALICIOUS

PDF

63.6 KB Created: 2021-04-08 18:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8ee745f818a861e3f06f5bc6aff101c SHA-1: 180cf4aab5f1432f8916ca027040b613b114b276 SHA-256: 9747343f0a002cbf0314ff457973fa232864f027c6665851ab8a55a20efbc958
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9241

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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 https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/7486912807.pdf
    • http://www.pacificsportfraservalley.com/sites/default/files/webform/zasadavatemomafupe.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/51762260361.pdf
    • http://klm3fg.grhosting.cz/sites/default/files/webform/files/15194676649.pdf
    • https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/povufukawonafano.pdf
    • https://www.ofalloncasting.com/sites/default/files/webform/zuloliresu.pdf
    • https://www.cdcplumbing.com/sites/default/files/webform/contact-us/sawifujemenolezaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=electron+positron+annihilation+pdf
    • https://www.healthdata.org/sites/default/files/resumes/nufimogunuzin.pdf
    • https://printandmail.princeton.edu/system/files/webform/83328436210.pdf
    • https://www.ice.cam.ac.uk/sites/www.ice.cam.ac.uk/files/webform/tivajojisepizoni.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c85c.bin
17d5d9a893fa4cb5695c1a95dbfb1406269ad3b96520670290d86630257ef1a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC85C 5200 bytes
font_01_sfnt_off0000da08.bin
daa1843672307295446674652dd96f3be3f8c9d42d7e109732dc7c459e50b452		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA08 10692 bytes

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