MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file contains embedded links that redirect to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to insurance claims, likely intended to trick users into downloading further malicious content. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points to a link farm or SEO poisoning tactic.
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=bcbs+of+illinois+claims+review+form In PDF document text
- http://files.prima-ef.org/uploads/1/3/1/4/131406269/8b648621025.pdfIn PDF document text
- http://files.photosandfootnotes.com/uploads/1/3/2/6/132682204/1366480.pdfIn PDF document text
- http://files.cjaudiology.com/uploads/1/3/1/1/131164425/jamifimixuwix_zajoroko_lazufaba.pdfIn PDF document text
- http://files.barrybuilds.com/uploads/1/3/0/8/130813770/zavamomijased_puzore.pdfIn PDF document text
- http://files.tufproject.org/uploads/1/3/1/3/131380177/dovapefek-mamulizaxe-siziriv.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/1/0430/6888/3106/files/41369718939.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8189/9944/files/kudoda.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3862/9270/files/63895612305.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8789/6488/files/dagerovidusejira.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/7027/4201/files/pagegalipefudabelunikomim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9664/4511/files/sezeluzimuvunemerar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lapifobojupe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9422/8630/files/sufuparoxexadumuva.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8862/5316/files/34869944210.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5013/8784/files/kosez.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3463/1579/files/8389090425.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1020/3556/files/19520798276.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokavurovapipemekimisam.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c395.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC395 | 4596 bytes |
SHA-256: 16ddf0d2b1ac4b4d2f46adc4539274eab9d17c1a8a00ef3c924f3fbb8ce7e7a9 |
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font_01_sfnt_off0000d3b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3B2 | 5076 bytes |
SHA-256: d0d49a073226f48a60829c90c6f80e72916e471fedaaae3a9c45f9d53f5a22b3 |
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font_02_sfnt_off0000e4d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4D3 | 14664 bytes |
SHA-256: 8c088b71ebd3f26566436c8107c9f3728f155d59bec35d1b019d596ea497df50 |
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