MALICIOUS
76
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded URI pointing to a suspicious domain, identified by both heuristics and an ML classifier. While no scripts were extracted, the presence of the external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The document body is heavily obfuscated and unreadable, providing no further context.
Machine Learning
- Nyx PDF Classifier malicious score 0.8028
Heuristics 4
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://nomylo.ru/square?utm_term=in+meiosis+the+daughter+cells+are+not+similar+to+that+of+parent+because+of PDF link annotation
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8233df4d7c53d8b1615a1/1625826109307/5726647374.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7e47c6e46386ca3c0f27e/1625810044808/add_money_to_cash_app_from_bank_account.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed95c7d2d00a35b8cfa067/1626183111939/47828387170.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c6f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6F0 | 16040 bytes |
SHA-256: 0fcf7b7fb7db3bc5083fcdc8849dce8454e5ec699fe33b2651d7063c99ebf21d |
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font_01_sfnt_off0000f097.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF097 | 11256 bytes |
SHA-256: 71a9defac013408f99373048e2081278131560f7b5d2ee9f6f5b19f1d0d554b1 |
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font_02_sfnt_off00010a55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A55 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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