MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One prominent URL, https://ttraff.ru/pify?keyword=btec+level+3+health+and+social+care+textbook+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating its likely purpose is to redirect the user to malicious infrastructure.
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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PHP webshell / backdoor source high WEBSHELL_PHPThe file contains PHP server-side code with the signature of a webshell/backdoor (request input fed to a command/code-exec sink). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
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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=btec+level+3+health+and+social+care+textbook+pdf In PDF document text
- http://files.saratogacoffeetraders.com/uploads/1/3/1/3/131380849/7115291.pdfIn PDF document text
- http://files.livinggodsmission.com/uploads/1/3/0/8/130874413/femobupowufebekoluta.pdfIn PDF document text
- http://bumaz.bradycampaignsd.org/uploads/1/3/0/9/130969868/c5a4ca98.pdfIn PDF document text
- http://muloxi.essentialbeingcoaching.com/uploads/1/3/1/6/131606289/jeguni-dapudeme-xafokevidep.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/1/0434/5469/3541/files/aparatos_de_ortopedia_dental.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4849/2438/files/cement_mixing_ratio.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2790/6206/files/palelewisagenemalo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8477/5577/files/21818610930.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5032/6421/files/88715576574.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2846/2233/files/pathfinder_core_rulebook_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0443/0426/9468/files/mobile_application_development_black_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0282/9734/files/http_sprint_com_powerdeck.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7424/7069/files/lozuxiguzixuzumekusa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4854/3142/files/acronyms_dictionary.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7476/5475/files/les_autres_et_moi.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_off0000462e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x462E | 5788 bytes |
SHA-256: 1639b19dc6bb3c037ae672ed5fb40c8e317e62212a9df90cd5a3beb14204b290 |
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font_01_sfnt_off000059d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x59D1 | 9812 bytes |
SHA-256: 650e7f15fb049f6222eaeac8567de05496e39ff333e10f96d0813a6965966edd |
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