Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cd9e4053e85e68…

MALICIOUS

PDF

80.8 KB Created: 2021-09-04 16:07:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 702294ac62f242af14d5eef481195741 SHA-1: f57d09c12c16bafce47a5ddd4161beafad5842d3 SHA-256: 06cd9e4053e85e686fa4f05ce803ef4eb9ecf3210820617354c86df64837d92b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics and ClamAV as malicious, indicating it is likely a phishing or malware distribution lure. The document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting an attempt to redirect users to malicious content. No scripts were extracted, but the presence of external links and the overall detection profile strongly suggest a malicious intent to compromise the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/16u1hn6pr5pldif060534r01h5/46876059442.pdf In PDF document text
    • https://saleskerala.com/ckfinder/userfiles/files/lizoje.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16070af4747a83---62182844819.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/90ceb01054459667cf1ce99a811c9721/zurixabedobi.pdfIn PDF document text
    • http://dom-2000.ru/ckfinder/userfiles/files/27333438250.pdfIn PDF document text
    • http://tianlanip.com/filespath/files/20210812024151.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160742a2e28cb6---59709524027.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/c85odng1132p0muqqlqhv0j71a/63173188128.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/sowezaruzunukex.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160ee2abe7bcc0---80092005602.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160caab3cbe492---xekisapotinekanu.pdfIn PDF document text
    • http://tetobox-budapest.hu/uploads/files/41535506287.pdfIn PDF document text
    • http://ilovegabal.net/fckeditor/_upload/file/nadazigutijejufigutewut.pdfIn PDF document text
    • http://siamsnail.com/media/userfiles/files/18267393317.pdfIn PDF document text
    • http://ipceurope.com/assets/file/11277523667.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/2cbf6d38dc0d4a1c59c41ebaed2f5697/86166191629.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/a2e7d149394c4bf7b854d8ff8fb4471f/lofomemunu.pdfIn PDF document text
    • http://dhsclassof70.com/clients/d/d1/d13f49183e6b2ef720c1f353b43de0f2/File/wopigaragebibexupewemum.pdfIn PDF document text
    • http://baloneacessorios.com/_upload/file///42305583637.pdfIn PDF document text
    • http://minerva-collection.net/files/files/rojawewemefiwekabifita.pdfIn PDF document text
    • http://vendsol.com/userfiles/file/84750578801.pdfIn PDF document text
    • https://ovistar-dz.com/ckfinder/userfiles/files/nirawefoluguderalixore.pdfIn PDF document text
    • https://deltaguvenlik.net/userfiles/file/30648173596.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=medicine+vocabulary+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD772 10760 bytes
SHA-256: f325c1da7d412f5679998f71413400c73eab2b8d73f8daf14e93da40c7b95ccb
font_01_sfnt_off0000f011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF011 17836 bytes
SHA-256: bd16492672bc45ca063350cbff949520c3c824763451dfecd0bc1eaaf0c36388
font_02_sfnt_off00011dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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