MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF documents. One URL, 'https://ttraff.ru/pify?keyword=adaptive+cluster+sampling+pdf', is flagged as a malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for links. The primary attack pattern appears to be SEO manipulation or distributing malicious content through a large number of external links.
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=adaptive+cluster+sampling+pdf In PDF document text
- http://files.citiesbysara.com/uploads/1/3/1/0/131069875/begaselapatilur.pdfIn PDF document text
- http://dibux.theconcertspot.com/uploads/1/3/2/7/132740494/virilidowawivajozo.pdfIn PDF document text
- http://files.aaronstarnes.com/uploads/1/3/1/3/131398244/gevidisurixon-zokogerotifike-filigufarisi.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/1/0430/9647/3749/files/4733116727.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7310/1214/files/nasobixupebekedewolibesej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0174/1463/files/5693420351.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0306/0128/files/irritable_bowel_syndrome_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3298/4222/files/7177229807.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0319/9133/files/vijeleb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3724/5086/files/8224160890.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8706/9335/files/62009527231.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4877/8400/files/zuwakozabi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6418/0390/files/644048978.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_off00007bca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BCA | 5524 bytes |
SHA-256: 0dab6959b6cb10b1d63730045f249b6f02c40028a085e39891b46fdacf12c603 |
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font_01_sfnt_off00008e81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E81 | 10068 bytes |
SHA-256: dd5557cefb5d9d234d6d53d78aecb029dc6c715d6c628a613eecf90da4da6456 |
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