MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as an article about gastric ulcers. The document also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to attract victims. The ML classifier strongly indicates maliciousness. The primary attack vector is likely the embedded malicious URL.
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.com/wb?keyword=ulcera%20gastrica%20articulo%20pdf In PDF document text
- http://files.d-vinedesigns.com/uploads/1/3/2/6/132695915/18176392.pdfIn PDF document text
- http://files.rsvpvolunteercaregivers.org/uploads/1/3/2/6/132681824/navate.pdfIn PDF document text
- http://files.namioncampusuno.com/uploads/1/3/0/7/130739883/buteninolemenagup.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/1/0432/2351/5294/files/lekidix.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50833930904.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4671/5040/files/tixujudopilel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1733/1100/files/duganoxedim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7011/2423/files/mulupabegof.pdfIn PDF document text
- https://talubugejama.files.wordpress.com/2020/07/69351810017.pdfIn PDF document text
- https://dozosemi.files.wordpress.com/2020/07/68519242490.pdfIn PDF document text
- https://bogivafapil.files.wordpress.com/2020/07/zobatulisifejujep.pdfIn PDF document text
- https://fuzejumif.files.wordpress.com/2020/06/83241772996.pdfIn PDF document text
- https://wijumama.files.wordpress.com/2020/06/45963331450.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1137/5267/files/59388095392.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5926/5188/files/64900867249.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3761/3461/files/lidadopetonimemisiri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8946/1410/files/61268626777.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3966/1986/files/jimakaravokakepulini.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_off000084f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x84F5 | 5088 bytes |
SHA-256: c8bec88795bb785afec49328b41982d5122ff0f761a90833d60a25225aa91188 |
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font_01_sfnt_off00009656.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9656 | 11148 bytes |
SHA-256: 7bc8478c2883b42d71d74300c89efaa62f4fe076667f3b92a21b61993feb2bc1 |
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