MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF document that contains a lure for a free download, indicated by the 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristic. This lure points to a redirector URL which ultimately leads to a phishing site. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted, but the overall pattern suggests a phishing attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.7746
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://feedproxy.google.com/~r/sq/ugae/~3/gOBB6uaVNRA/square?utm_term=cbse+9th+class+science+book+solutions+pdf+free+download PDF link annotation
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8ec9bdc37083541b63df7/1625877659997/kaliv.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8a09f6a023653f6c1a9e0/1625858207589/data_structure_tree.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca8b03631fd4ab819d8ff/1626122416617/cook_county_small_estate_affidavit.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed7d733b21860fe6720b53/1626176883136/roman_numbers_201_to_300.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_off0000c4cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4CF | 16924 bytes |
SHA-256: c8c3388cd8850c2245831c44706af44220205bc30ae221de7f6199d1a5ccc958 |
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font_01_sfnt_off0000f0b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0B5 | 11336 bytes |
SHA-256: 38c181c361e31904b0deb93d826841372f60b621345c38567f671dc728a9490f |
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font_02_sfnt_off00010b32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B32 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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