MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many of which point to a redirector infrastructure identified as malicious. The document body and heuristics indicate a lure for a "free download" of a tutorial, which is a common phishing tactic. The ML classifier strongly indicates maliciousness, and the embedded links are designed to lead users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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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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://ttraff.com/wix?keyword=jquery+tutorial+w3schools+pdf+download In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://static.usrfiles.com/ugd/0adedf_7b374c8c084e4bb1aa48224fcb8b9c58.pdfIn PDF document text
- https://static.usrfiles.com/ugd/5ad03d_384a1da2ad8348fcad657a9d7810bf2c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_5ecd898ac8d74c389ba3a94c5d426505.pdfIn PDF document text
- https://static.usrfiles.com/ugd/299074_3bf7ec0e48ff46e0980927759c0ab71c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_e51eb82ffb154d6ea71517379899237c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_af6b54b025fe416da52ec83a393ae1ad.pdfIn PDF document text
- https://static.usrfiles.com/ugd/bf650e_664765d4f2bb4c049d7150a380f0b0c3.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6510/5814/files/5082344776.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4764/8406/files/sejudolofo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0011/7928/files/blowin_in_the_wind_guitar_tab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9820/9446/files/complex_buying_behavior.pdfIn PDF document text
- https://static.usrfiles.com/ugd/58a813_92287b455b444433aa061fea99a3775e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/e2f7e1_05dd983c01104df1bfb59037772e7610.pdfIn PDF document text
- https://www.w3schools.com/w3css/4/w3.cssIn 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://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006775.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6775 | 5600 bytes |
SHA-256: 76c8363473ab8acdf4c17ed584394d96536a9aeac5c428b04fc2df508525127f |
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font_01_sfnt_off00007a9a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A9A | 11376 bytes |
SHA-256: 26d74f002e441f830a46d0d6f04f92d17defd709d4bf70482b42a03cd080c77f |
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font_02_sfnt_off0000a082.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA082 | 16088 bytes |
SHA-256: fff8b70d67420864e2a263fdbbaad35efae781e73a516d3cf38207748e8715b5 |
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font_03_sfnt_off0000b536.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB536 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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