Malware Insights
The PDF document exhibits characteristics of a link farm, embedding numerous external links, many of which point to PDF files hosted on Shopify. A critical heuristic identified one of these links, https://ttraff.ru/pify?keyword=adjacent+channel+interference+in+mobile+communication+pdf, as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains text related to 'adjacent channel interference' and mentions 'wkhtmltopdf', suggesting a lure document possibly designed to lead users to malicious content via the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=adjacent+channel+interference+in+mobile+communication+pdf In PDF document text
- http://files.theglowdancecompany.com/uploads/1/3/0/7/130775727/6186860.pdfIn PDF document text
- http://zefevawa.filamenthome.com/uploads/1/3/1/4/131406893/217e14681.pdfIn PDF document text
- http://files.eatingdisorderrecoverymidmichigan.com/uploads/1/3/1/6/131606046/5766502.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/1/0430/9948/8410/files/mikasojunufusoramosag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4046/4281/files/new_holland_repair_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0473/9232/files/cantoral_litrgico_nacional.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1740/3549/files/welovalesubabovisutogotiw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0483/6515/files/6718651752.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8155/6375/files/87407198686.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3050/2806/files/guvukegur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7415/0809/files/10892291990.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4312/6438/files/analytical_chemistry_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6078/1465/files/lodoniruzovagiduguveled.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jatud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8054/8505/files/xefosuserezime.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010a05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A05 | 5420 bytes |
SHA-256: 7b3780b0003aa5517467f660ca50616b167c143a1c34e63f4bf06f0c3cff0e7e |
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font_01_sfnt_off00011c4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C4B | 10192 bytes |
SHA-256: af62272eee9667508d271afb39259d7bddca69efcd09d4e48a8a0e1bc091cc64 |
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