MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
T1059.001 PowerShell
The PDF file contains multiple embedded links, with a critical heuristic firing indicating it's a malicious redirector. The primary link, 'https://ttraff.ru/pify?keyword=employee+termination+letter+format+pdf', is designed to lure users by impersonating an employee termination letter. The file also exhibits characteristics of a link farm, with numerous links pointing to external PDFs, likely to improve search engine ranking and distribute malicious content.
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=employee+termination+letter+format+pdf In PDF document text
- http://files.pixelleadershipgroup.com/uploads/1/3/2/3/132302883/1992943.pdfIn PDF document text
- http://files.marinadeboer.com/uploads/1/3/1/6/131607023/zasekavoz.pdfIn PDF document text
- http://files.dorisellenestallo.com/uploads/1/3/0/7/130739060/farunakam_givawirefojujig.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/1/0433/0687/7080/files/26160609228.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0743/3125/files/fukakafuwa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2309/0343/files/vafulirapiviru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6633/6167/files/dexoxegomumegalirokiporur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2198/4166/files/82758027876.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8851/9080/files/jitopiroxafidivozuni.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4346/3074/files/fapazexudotomakoxoxi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6762/2055/files/64808029926.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovegutug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0512/4503/files/zobut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8879/6065/files/48469221774.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8136/6693/files/27764923668.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007bd6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BD6 | 4856 bytes |
SHA-256: 2738ea185713a219351bf7a1e81b5f3c637f2e3725946d8de86dcfe177b25e8e |
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font_01_sfnt_off00008c3c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8C3C | 2268 bytes |
SHA-256: 72a3fe65f0a21df30f240897224061cfa351088b80a4eb601fb5defb198ec993 |
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font_02_sfnt_off0000964e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x964E | 10376 bytes |
SHA-256: 199d74674ae3e67104d5945d02d39f8ca96459563232c62bb6a06ebc32ba192e |
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font_03_sfnt_off0000b9f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB9F2 | 16168 bytes |
SHA-256: 0216150ac0e5ade23b072752459620ec704bdac01526bfbadd96d51f96873ef3 |
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