MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external resources, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at 'https://ttraff.club/wix?keyword=science+data+tables+and+graphs+worksheets'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same suspicious URL.
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.club/wix?keyword=science+data+tables+and+graphs+worksheets In PDF document text
- http://sinumer.tidalmoonmusic.com/uploads/1/3/1/8/131856097/simuf_naruveb.pdfIn PDF document text
- http://lufojobab.gcwellington.com/uploads/1/3/0/7/130739048/1985440.pdfIn PDF document text
- http://didijanu.throughthereddoors.org/uploads/1/3/1/4/131412032/1a784d4cc70ec.pdfIn PDF document text
- http://pekixa.houstoncalligraphyguild.org/uploads/1/3/0/8/130874379/c60ad5.pdfIn PDF document text
- http://gunavux.jenroweaicp.com/uploads/1/3/2/7/132741100/bapimoj-didivopefum-sapiduraju-wiwejakidexof.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/8112/5278/files/21359713411.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3858/6518/files/actuarial_tables_uk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0446/5927/7987/files/apple_itunes_for_android.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tomazemajetel.pdfIn PDF document text
- https://67505f48-ee51-4127-a1a3-5d35c1ac5263.filesusr.com/ugd/30e015_f5622395253d45b3924882fb97fdd812.pdf?index=trueIn PDF document text
- https://55cd38ab-cc2f-4ab8-9e9a-181ad073084b.filesusr.com/ugd/3a38e0_63d9a1e4d496425baf055bf406b567fc.pdf?index=trueIn PDF document text
- https://bbcd95d4-54f1-4cac-b1f1-190825d4c5a3.filesusr.com/ugd/d01287_c5546e7a27ab4e3c873af3af8382c36d.pdf?index=trueIn PDF document text
- https://346b561f-87bc-47e4-9866-3eba9aa49029.filesusr.com/ugd/89c6ad_ddac6726d3174104a5d2069adcc8c675.pdf?index=trueIn PDF document text
- https://d21a9fee-59da-46a0-8593-85ffb999730c.filesusr.com/ugd/f91cf1_6961d406df84467bb6d9d836c45d211f.pdf?index=trueIn PDF document text
- https://d8e9e56f-58ad-4580-834a-cf5c820177db.filesusr.com/ugd/6f9b04_6532c0430da84ec08b5bd374d8acb7a8.pdf?index=trueIn PDF document text
- https://3161a6d4-4ef7-4a85-8822-2a470eeb35a5.filesusr.com/ugd/865d50_2d3897a647ab461da8d4104313466aba.pdf?index=trueIn 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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004a8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4A8E | 5736 bytes |
SHA-256: fa9ec451d6268ca9aeb589c9f28c8d39e3c894b4e47b8651a9913c3948f6577f |
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font_01_sfnt_off00005e0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E0F | 9836 bytes |
SHA-256: fadcd8240ed6965d99295b6489711d3032190c10e58ff86547501f85770953e9 |
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