MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, with high-severity heuristics indicating it's a phishing lure for free downloads. The embedded URL points to a redirector, likely serving a malicious payload. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to exploit user trust for malicious purposes.
Machine Learning
- Nyx PDF Classifier malicious score 0.7390
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://krisoc.ru/square?utm_term=design+for+manufacture+and+assembly+pdf PDF link annotation
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee56a8462f394a1e4403ee/1626232488935/say_about_yourself_in_interview.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee3a92b82b3047686016d2/1626225298230/leluxarajafikagonopi.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f058e1c872e80de5b2c25a/1626364129312/sims_1_deluxe_edition_download.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee3e75fd66ff3739ee7930/1626226294115/language_arts_meaning.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_off0000cc8d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC8D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e4a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4A4 | 11316 bytes |
SHA-256: 297fc2eb6bc4a3a16acd67e31ecd6799194509e14ef8aa1edcedcbc9e94baa1a |
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font_02_sfnt_off0000fee0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEE0 | 16188 bytes |
SHA-256: 3485a58060429292184e7b38dedd4b57fc6043faf92f6392197ec657222667c8 |
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