Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0d6dd6174d381b…

MALICIOUS

PDF

112.7 KB Created: 2021-07-15 10:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 018c8b9cb088f486764ce24081440dce SHA-1: eb88918401f8d71a0b09d4e24c7854bc7c409204 SHA-256: ed0d6dd6174d381bccc57eaa763bd131ab5533d6ede506a50fc973bf6ad213de
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it's a phishing lure designed to redirect users to an external website. The embedded URL 'https://oniceh.ru/square?utm_term=kinds+of+love+in+the+bible' is the primary indicator of this malicious redirection. While no scripts were explicitly extracted, the PDF structure and the nature of the redirect suggest an attempt to exploit users through a deceptive link, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8110

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://oniceh.ru/square?utm_term=kinds+of+love+in+the+bible PDF link annotation
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7bc46adf2c26882ff0bcd/1625799751183/how_to_find_answers_for_tests.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecab8e77250868137097a3/1626123150377/wozogekopefeni.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8f6c4566ded7d61ab1a69/1625880260988/defino.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edadc93680ef421b56458e/1626189257137/nikumopibamopu.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8d411a7a95e0b19802502/1625871377295/chartered_management_institute.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_off0001596e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1596E 17844 bytes
SHA-256: 312967e1751fe7dad416fda542e7ab7b21aa5561597955b67aaa14ac108afbd1
font_01_sfnt_off00018769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18769 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F80 10384 bytes
SHA-256: e001c38eff7ff3ecc9e057640c209d11249daf9cc903d320c6f1dbed391722c8

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