Malicious PDF — malware analysis report

Static analysis result for SHA-256 1182505e7e9afc13…

MALICIOUS

PDF

76.6 KB Created: 2021-07-14 01:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: f457de31a039a45696efc41405394acc SHA-1: de5478cbd596d81999bd398b16e62e4eaa70b6da SHA-256: 1182505e7e9afc1342903fab81a871f2967dcd3dee52b5a3d6c007787d9b3d0c
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document flagged by an ML classifier as malicious. It contains an embedded URI pointing to a Google Feedproxy URL, which in turn redirects to a Squarespace domain. While the specific Squarespace URLs appear benign, the presence of the ML firing and the embedded URI suggests an attempt to direct the user to a potentially malicious resource. No scripts were extracted, and the document body was unreadable, limiting further analysis of the exact intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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/r_nBws6J8g8/square?utm_term=820+mm+to+feet PDF link annotation
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e91b67f4fe78435a3a6f5f/1625889639325/the_spanish_groom_free_online_read.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7e493a431ed42d2fc47dd/1625810067243/pujirixanotuzeka.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edffab10369373fd877d4a/1626210219446/part_and_whole_question_answer.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e936015ebba154a8fcfb80/1625896449979/11574271756.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8913745094f692cdadda5/1625854263634/34819825059.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7c73a23621b4743e3212e/1625802554576/harry_potter_and_the_chamber_of_secrets_ebook_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec93db90a3fc49531ab633/1626117083742/untreated_strep_throat_complications.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7f6d3a431ed42d2fcfad0/1625814739436/57417455645.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e786b7eb0ed35cc38e7b9b/1625786039767/grand_national_aintree_2021.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_off0000cd2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2B 16460 bytes
SHA-256: 673d38aad6bfdbbbf8c40c14200fd87dcae062bd10eacf3ab6a99e8b271d1b4e
font_01_sfnt_off0000f80c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80C 10056 bytes
SHA-256: c94770300c846d59bb62bdb5e48e07e68c51ac08ee3c2142936f4ad72e317d9b
font_02_sfnt_off00010e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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