MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, suggests a lure related to educational material. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which point to the static.usrfiles.com domain, likely part of a link farm to improve search engine ranking for malicious content. The ML_NYX_PDF_MALICIOUS heuristic strongly suggests malicious intent.
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.me/pify?keyword=electron+configuration+and+orbital+diagram+practice+answers In PDF document text
- http://files.yippeewebdesign.com/uploads/1/3/2/7/132740533/8726418.pdfIn PDF document text
- http://wizariki.ghoulagebrands.com/uploads/1/3/1/4/131453850/6dc38981e871cf9.pdfIn PDF document text
- http://files.theproducerbdb.com/uploads/1/3/2/6/132695639/vozagojilanu.pdfIn 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/c8683e_2afd02fb6e5a4eb293d33a6b1ca0af12.pdfIn PDF document text
- https://static.usrfiles.com/ugd/2f7815_846d370c02cd40238f96f17de427abf0.pdfIn PDF document text
- https://static.usrfiles.com/ugd/5bb01c_9cd975a116324c27987dbd75cee6f521.pdfIn PDF document text
- https://static.usrfiles.com/ugd/7603ae_9406cd7d90c34c3f8d84594ed5bb167f.pdfIn PDF document text
- https://static.usrfiles.com/ugd/8b49c6_f93b6c2235364df48463a35ff9a64f0f.pdfIn PDF document text
- https://static.usrfiles.com/ugd/73f3b0_66e5eb6e0e78454198b04eb8b74e11c7.pdfIn PDF document text
- https://static.usrfiles.com/ugd/6f7357_5239a77ad8d240e39a8af418f7e7708e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/4826f5_1b75cea163ef4c79842ff20f2eb476d1.pdfIn PDF document text
- https://static.usrfiles.com/ugd/e948c1_a9cf71b288a74118b0437fb8214856fb.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_9dab5f8518744f5480a8a1142c8bc6f9.pdfIn PDF document text
- https://static.usrfiles.com/ugd/65d6f7_718706f987474cbca0f5668be2200fdc.pdfIn PDF document text
- https://static.usrfiles.com/ugd/0cd019_daa48e93c6fd4acdb2020359744f1172.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_58c0e2677d264bdfb97c9b6145d5f366.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_off00006524.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6524 | 5544 bytes |
SHA-256: feac59a474b0036b9addb563d3d1b8bd1b95b713d79002930aa03b397480499f |
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font_01_sfnt_off000077ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x77EF | 10492 bytes |
SHA-256: 56e63b1d16a696615bc52869f1cb1cb907c38f868b942ba15444595fe1aaebd5 |
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font_02_sfnt_off00009c05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9C05 | 16288 bytes |
SHA-256: 135b61bc7a41198c29115aa914e1ed5c9eb5abf4e5d7d8c7271b2eeba2326a89 |
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font_03_sfnt_off0000b194.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB194 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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