MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=surface+area+of+right+cone'. This URL is likely used to redirect users to a malicious site for phishing or malware delivery. The document also exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on 'static.usrfiles.com'. No scripts were extracted from this sample.
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.ru/wix?keyword=surface+area+of+right+cone 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/b8c837_09afb7bc9c834125bc5547bdd4df0aea.pdfIn PDF document text
- https://static.usrfiles.com/ugd/d01287_defaa96204924fb0afc8b680f26bc535.pdfIn PDF document text
- https://static.usrfiles.com/ugd/db1da1_0e4ad60dfbce46b2b15feecc6214b9dc.pdfIn PDF document text
- https://static.usrfiles.com/ugd/735189_9eebd94c647b4e3fb30b548fcf745c8c.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3608/1308/files/10836697596.pdfIn PDF document text
- https://static.usrfiles.com/ugd/469aea_ba021f546cb14a2bbbb737e2749af78e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/03ae60_a025cd8856bb48bcb5ce859b0dc50ec0.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_ea18c6f43d984f198b1cf0c001dc39e2.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a18aa6_1647dbb190bf4f638724c9cb0fc39861.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a58b01_9b4ef4d6cbe84a34ad2945a627198def.pdfIn PDF document text
- https://static.usrfiles.com/ugd/9ea91e_36189a60c400422eb6692a22e3d5741a.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_bda96b91e62445049cbdeb2cb1c3580d.pdfIn PDF document text
- https://static.usrfiles.com/ugd/4dd980_e2433ad32f8a4c2f871df139d375477b.pdfIn PDF document text
- https://static.usrfiles.com/ugd/0aab01_84bb08b89b334729a9c09bbd03aca3c2.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://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_off00005d15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D15 | 4916 bytes |
SHA-256: 1d66d610a778a247ee3f6a6f57b82d231ef105dc8aa940e431e466d736006831 |
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font_01_sfnt_off00006dba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6DBA | 10716 bytes |
SHA-256: de9e7691d74059575987efef31ca9bd089153c07c0b50983d8d229fdb99d321b |
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font_02_sfnt_off00009269.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9269 | 16152 bytes |
SHA-256: 9dd161ad083bde31f1785977080a21cd00ffd1d65af7312c0685ba069ea0c2ef |
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font_03_sfnt_off0000a76f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA76F | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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