MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous links to external resources, masquerading as a collection of 'Urology textbooks pdf'. It utilizes a redirector URL, 'https://ttraff.cc/wb?keyword=urology%20textbooks%20pdf', which is flagged as malicious. The presence of a large link farm suggests an attempt to manipulate search engine results or distribute malicious content, likely leading to further malware downloads or phishing attempts.
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.cc/wb?keyword=urology%20textbooks%20pdf In PDF document text
- http://files.kurznachzehn.com/uploads/1/3/1/6/131606758/xomes.pdfIn PDF document text
- http://files.ebfbla.com/uploads/1/3/1/8/131871467/ba9bac1457dac9.pdfIn PDF document text
- http://files.patrickdeanhubbell.com/uploads/1/3/2/8/132815172/biburira-favinoxifilelo-nunogaviw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://pomedefasef.files.wordpress.com/2020/06/18014309340.pdfIn PDF document text
- https://xatekenan.files.wordpress.com/2020/07/84251631375.pdfIn PDF document text
- https://turepiw.files.wordpress.com/2020/07/jurus.pdfIn PDF document text
- https://ganotibav.files.wordpress.com/2020/07/zitun.pdfIn PDF document text
- https://sexedituf.files.wordpress.com/2020/06/94604070290.pdfIn PDF document text
- https://taribifu15544649.files.wordpress.com/2020/07/wadewejivewimo.pdfIn PDF document text
- https://lobovesop.files.wordpress.com/2020/06/timojira.pdfIn PDF document text
- https://zadedow817229965.files.wordpress.com/2020/06/rajodusufinulibovurupela.pdfIn PDF document text
- https://badibiref.files.wordpress.com/2020/07/57291032390.pdfIn PDF document text
- https://lawedalegepe.files.wordpress.com/2020/06/bubajezejupudipoledewe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5821/7631/files/29411812682.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4768/2201/files/debebed.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8911/6840/files/28052407939.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9314/8313/files/47109433742.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8657/7828/files/59981788403.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8617/6675/files/xusibopuweledivu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1455/3763/files/6434236562.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4819/8556/files/vujibizapimosamodevipizu.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_off0000795c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x795C | 4996 bytes |
SHA-256: e9e88c47a7213e1629aa167a7d962c103a1e42743dcc78ff609e95f7f6643822 |
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font_01_sfnt_off00008a7e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A7E | 9816 bytes |
SHA-256: bd88d0a387bbfeae8e11b2420a786500225a30adb9bad97726367d055ae23bc6 |
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