Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a85ec80f655b2e…

MALICIOUS

PDF

48.8 KB Created: 2021-10-02 09:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 4943928e37f707dd05b3846b27be1493 SHA-1: 282c2b2c5dcd37da61850b3d00f0f3c76f21612c SHA-256: 07a85ec80f655b2efe82a52d4ef1cdc28923806e2796c908cf3a54f57f06dcf7
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to external websites, many of which appear to be part of a link farm hosted on disposable domains. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the structure suggests it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8460

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 https://nomylo.ru/uplcv?utm_term=degrees+of+freedom+calculator PDF link annotation
    • http://itcck.org/upload/editor/file/metebasudopolomiboj.pdfIn PDF document text
    • http://hit-air.pro/ckfinder/userfiles/files/rufonisedubogegaxitizogel.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/34734364560.pdfIn PDF document text
    • https://marcuspietrek.de/MARCUS/files/file/75072022243.pdfIn PDF document text
    • http://corising.info/sa_upload/userfiles/file/20210910175610.pdfIn PDF document text
    • https://tekdalyapi.com/upload/ckfinder/files/95946840812.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/69855330980.pdfIn PDF document text
    • http://krukaiart.com/userfiles/files/degus.pdfIn PDF document text
    • http://opusincertum.it/userfiles/files/nalidovaxuridizabagafabi.pdfIn PDF document text
    • http://jianianhuayule.a9188.com/upload_files/art_files/files/20210921_040244.pdfIn PDF document text
    • http://verkaufs-akademie.com/userfiles/file/38477143132.pdfIn PDF document text
    • https://www.hkha.com.hk/ckfinder/userfiles/files/5630927430.pdfIn PDF document text
    • https://novsport.com/content/File/77577410401.pdfIn PDF document text
    • http://erfaspot.com/resimler/files/fidatoruwofo.pdfIn PDF document text
    • https://pointwebhost.com/calisma2/files/uploads/molovelofeliwisokugu.pdfIn PDF document text
    • http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/sadesotisemed.pdfIn PDF document text
    • https://sadhankendra.org/erc/media/74422099745.pdfIn PDF document text
    • http://susasoft.com/upload/userfiles/files/74919563872.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16147355c78035---75092404542.pdfIn PDF document text
    • https://cvconstructionsgoa.com/pharma/admin/userfiles/file/28977342824.pdfIn PDF document text
    • http://agriturismolataggiasca.eu/userfiles/files/71602349408.pdfIn PDF document text
    • https://btsis.com/upload/ckfinder/files/nixexapo.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aeff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFF 10724 bytes
SHA-256: 8b0fea2a55b7e0578d3a212d87d746cb6943fb42992b0476dcf300014b138bd9

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