MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as a malicious redirector due to the presence of numerous embedded links. One critical heuristic firing indicates a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=procalcitonina+valores+normales+pdf'. Another heuristic flagged a large number of external PDF links, suggesting a link farm or SEO poisoning attempt, with 'https://cdn.shopify.com/s/files/1/0429/3728/6815/files/naruto_op_13.pdf' being the first identified. The document body contains garbled text but includes the same suspicious URL and several benign-looking Shopify URLs.
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=procalcitonina+valores+normales+pdf In PDF document text
- http://files.childrenareourspecialty.com/uploads/1/3/0/8/130814531/83c371c7dde.pdfIn PDF document text
- http://files.hillarytrailadventures.co.nz/uploads/1/3/1/6/131636946/1473492.pdfIn PDF document text
- http://files.ojmfarmcontractors.co.uk/uploads/1/3/2/6/132682090/cdb79f475.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/1/0429/3728/6815/files/naruto_op_13.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5525/9560/files/43560876829.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8259/6004/files/2031670553.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6583/4658/files/rimobesapurizelimisunux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4247/9000/files/moteliwidezunuvagunim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6576/9110/files/3925640858.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0670/5312/files/jexewemapinuzefovetu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5448/7957/files/circular_motion_questions_and_answers_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/xajokal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8406/2622/files/bocadillos_menu_pdf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3009/3728/files/rakozujisina.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2990/6079/files/47844678925.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1503/5291/files/manual_rebar_bender.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3653/9045/files/49017385288.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_off0000aa98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA98 | 5364 bytes |
SHA-256: 948d8452b3fba573d6867a6ce8647c9880317b3ec65f2d3c20d69f227b6d86ba |
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font_01_sfnt_off0000bcc5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBCC5 | 11888 bytes |
SHA-256: 36b6b138ee590cfe25fad5bb2d556a1a0d0dedd7298ddfd274b257565af0b3e0 |
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