Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b52e96a6793a63e…

MALICIOUS

PDF

76.9 KB Created: 2021-07-21 05:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d85b610061c800dfee41e58173f60d78 SHA-1: a5e2ce254d2280509bf5dbd7d781885851375a5d SHA-256: 3b52e96a6793a63ed388565f5b5824a15438638c4b65d69a44f4702b96ae4181
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded URLs that point to external resources, likely used to deliver a malicious payload or redirect users to a phishing site. No scripts were extracted, but the presence of embedded URLs suggests an attempt to download or link to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/razvivatel/yapz/~3/0YvHz_IItD0/square?utm_term=worksheet+on+geometry+for+class+5 PDF link annotation
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7bab94454ab0ddd845290/1625799353976/scope_time_budget.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee477a2d09e34b72a0e1c3/1626228602286/looking_out_for_number_one.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f2c42236db646251998e81/1626522659037/gilep.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92e84025aa46e30d3407e/1625894532587/97244453689.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1e182852c5016dba3b829/1626464642972/america_to_hawaii_flight_time.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec79d9c268f363b085c87c/1626110425782/19609663991.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3b2e56f491d4a1ff5c1bc/1626583781245/juzewemunijotujabubajire.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edba4f7bdb5238db91c57c/1626192464198/express_360_as_a_product_of_its_prime_factors.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_off0000cbc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC6 11024 bytes
SHA-256: 9f40f54da08f0805ef9a45a367291c1c59074bca80711d4ecf6643918636a4ed
font_01_sfnt_off0000e566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE566 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fd78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD78 16320 bytes
SHA-256: 3380605612dc273524aa94ef9c561b5f3f337eabc591b85b8a233462a42e4abd