MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, including one to a known malicious redirector at `https://ttraff.ru/pify?keyword=distribui%25C3%25A7%25C3%25A3o+binomial+pdf`. This redirector likely leads to a phishing page or malware download. The document body, though heavily obfuscated, also contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm or SEO spam tactic to distribute malicious content. The ML classifier strongly supports the malicious verdict.
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/pify?keyword=distribui%25C3%25A7%25C3%25A3o+binomial+pdf In PDF document text
- http://files.southsidecigars.com/uploads/1/3/2/6/132695741/8b9dd5eab8465a.pdfIn PDF document text
- http://files.blackhillspediatrics.com/uploads/1/3/1/4/131407284/5b391e0b55.pdfIn PDF document text
- http://files.janeandjohnqpublic.com/uploads/1/3/1/8/131872054/xapogilebibapuzu.pdfIn PDF document text
- http://files.acreditleap.com/uploads/1/3/0/7/130739155/43ba6bd6.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/1/0436/9340/8409/files/zimifawupasi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9869/3013/files/billy_goats_gruff_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5980/5350/files/noxaberusuvixomanun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3727/5813/files/51188227276.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3748/1365/files/21582718302.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3826/0898/files/ecologia_y_salud_ambiental.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0213/3653/files/biography_books_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6728/4387/files/65358170966.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9078/7996/files/vunudibax.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0481/9613/files/find_height_of_binary_tree_c.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00008472.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8472 | 5824 bytes |
SHA-256: 7fae3fb6d79735605fa27715b563eebc46d23083f8446b2558262cd4975bfc75 |
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font_01_sfnt_off00009785.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9785 | 15344 bytes |
SHA-256: 28780e3ad82c79640792b7ccf73b0c13dc921d232ab3d27198931e9afaa39d35 |
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font_02_sfnt_off0000c77f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC77F | 16756 bytes |
SHA-256: fa1facf076e4a48be005db9f39458375851233ac297d7933f311f52c541001a6 |
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