Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfaccafbbd0eacf…

MALICIOUS

PDF

81.0 KB Created: 2021-07-20 07:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 979d353176118cc2d5e4234fab72deec SHA-1: a919378902bc4aff8a890dc64db0f368268e497c SHA-256: 2bfaccafbbd0eacfc63531c50ceb5926f07ba9aefe8452883baf2004e8bbe097
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high-confidence heuristic indicating it's a PDF phishing lure using an SEO redirector. The embedded URL points to a Google Feedproxy service, which then redirects to a Squarespace domain, a common tactic for phishing pages. No scripts were extracted, but the PDF structure and heuristics strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://feedproxy.google.com/~r/sq/ugae/~3/CcIy6vlvkUk/square?utm_term=hyperventilation+lowers+the+levels+of PDF link annotation
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edb1dff53e3457ef88a55a/1626190303296/best_truth_questions_for_gf.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e92ea12c5c2f6215c97402/1625894561783/negates_the_need.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edf8cca9d1f62037e5a10a/1626208460296/god_help_the_child.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f39d0bce637c25833ddc14/1626578187724/calibration_of_uv_visible_spectrophotometer_as_per_ip.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edf0afe635d716646394fb/1626206383930/18758066807.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f2d4d11d3507074218d1df/1626526929302/ovulation_symptoms_after_miscarriage.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f4c96923bf9c1bcaf7a3d9/1626655083100/35867020539.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed891de255175820c24a15/1626179869291/tommie_and_letoya_luckett.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edba70a777f115ab91510c/1626192496750/50291106910.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7996e64ce5371633c714/1626110359158/15436235070.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f007b6bae8d04216d5ff7f/1626343351070/the_wild_swans_at_coole.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f35c6581f38b20588782f8/1626561637752/the_phantom_tollbooth_movie_streaming.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e92cf8c0906550d90b910e/1625894136433/hierarchy_of_authority_definition.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0baf3347a2e2c84f9587a/1626389235740/fuwatuzaduwisadimax.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7a8640121f56689902fe/1626110598562/rokuwexetikadi.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f2f5ab04a1d9701796c8bb/1626535339119/nts_past_papers_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f525e5b282b304dad137fc/1626678757781/andre_hayworth_missing.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0de1f2606b657d35338e3/1626398239668/therefore_in_a_sentence_with_semicolon.pdfIn PDF document text
    • 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_off0000db5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5B 16520 bytes
SHA-256: b2035b331a5ed00482b6d20f12158e2111de395b04bc56009fb4f5dd4908a8ee
font_01_sfnt_off00010678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10678 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8F 10712 bytes
SHA-256: d8a344aebca8edf579db99cd48bb811f1c50ef69678d615556231546df377893

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