MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to an SEO redirector infrastructure, specifically `https://ttraff.cc/wix?keyword=english+grammar+class+3+pdf`, which is flagged as malicious. This suggests a phishing or malware distribution campaign disguised as a free download of educational material. The document body, though heavily obfuscated, also contains this malicious URL and links to benign Shopify-hosted PDFs, likely to create a link farm for SEO purposes. No scripts were extracted, but the PDF structure and malicious redirector indicate a high likelihood of user-directed compromise.
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.cc/wix?keyword=english+grammar+class+3+pdf In 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/1/0441/3623/5160/files/ferokevapeziv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2496/3990/files/audience_analysis_in_business_communication.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3942/4669/files/89166024632.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9971/6770/files/year_end_report_card_comments.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3204/2920/files/52633855007.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3445/0840/files/93103716873.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0463/0786/8834/files/lebidajizop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6992/2714/files/togujo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1804/4063/files/37304289809.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9768/5157/files/napas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1824/8601/files/swka_angielski_poziom_b2.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2358/0830/files/blender_bottle_recipes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3842/5766/files/tremendos_galileos_discografia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1759/1189/files/arabic_malayalam_dictionary_download.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_off00006341.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6341 | 5692 bytes |
SHA-256: e26a72aeda35bb6ee7d58aca1dccf694d71c0ac2050ed03268746c4a90c82f95 |
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font_01_sfnt_off0000765e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x765E | 7144 bytes |
SHA-256: 1b7399783cab615e72726ee69b5abd8c87986855270aba2b66736f2ef3c29daf |
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font_02_sfnt_off00008a7c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A7C | 10180 bytes |
SHA-256: 3a954763e79dc4ac159474361c960de741bab54b5d195dc07ab9e7f60b838a80 |
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font_03_sfnt_off0000ad5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD5A | 17492 bytes |
SHA-256: c1e6ffc75750c5739b28184ea098192487e1c360ff13057a509a4a6bbbe05e79 |
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