Malicious PDF — malware analysis report

Static analysis result for SHA-256 06eeb9f71f58afbc…

MALICIOUS

PDF

77.7 KB Created: 2021-07-18 15:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 7edeb94db12e02c4c487fcbb9e5c4a50 SHA-1: 94235ac6e22bda0b445597b7be63f88b37dacca1 SHA-256: 06eeb9f71f58afbcd0adaba3322bd656e10bf3de6aa6ccfcccea64f973698312
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI pointing to a Google feedproxy URL, which resolves to a benign Squarespace page. While the ML classifier flagged this PDF as malicious, the lack of malicious scripts or obfuscated content, combined with the benign nature of the extracted URLs, suggests a low-confidence malicious classification. The primary finding is the presence of an external URI, which could be part of a larger phishing or social engineering scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9163

Heuristics 4

  • 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/IdU8rIDf9lQ/square?utm_term=why+does+mosquitoes+bite+you PDF link annotation
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8d3c5a15ec47e0818572a/1625871301244/73323891044.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f20cc879ed255f8b5ca04a/1626475720267/2017_ap_chemistry_multiple_choice_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f3a251689a653fd29ae097/1626579537375/repisisexarofegivu.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee59385f7927514e3f14ce/1626233144283/explain_the_difference_between_passive_transport_and_active_transport.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f06f05ac785a4b5bacca99/1626369797742/euro_to_dollar_chart_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f1a9f66dd6aa56c1283c32/1626450423083/professional_real_estate.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f161f8db86a67d8584c01d/1626431992234/37921442780.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_off0000cec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC6 16776 bytes
SHA-256: 7dfb2ff8fd0c962f82dc232d63fe99db6473bd0d42d6acc9474ff98f1fcfbfb4
font_01_sfnt_off0000fab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB0 10592 bytes
SHA-256: 813a301cdb4d1cbccdf065f56f038829b2f6d3f999fb93ed7b9a4f76cee43702
font_02_sfnt_off000112ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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