MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various external resources. One critical heuristic, PDF_MALICIOUS_REDIRECTOR_LINK, specifically flags a link to 'ttraff.ru', indicating malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be related to the 'Rc5 algorithm in cryptography pdf' keyword, suggesting a lure to attract users interested in cryptography topics. The primary attack pattern involves redirecting users to potentially harmful websites.
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=rc5+algorithm+in+cryptography+pdf In PDF document text
- http://files.billchosycamore.com/uploads/1/3/2/6/132681694/jilak.pdfIn PDF document text
- http://files.tchancellor.com/uploads/1/3/1/3/131398338/2907615.pdfIn PDF document text
- http://files.mccormickqwik.com/uploads/1/3/0/9/130969452/7921003.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/1/0432/8026/9462/files/pezisegaxowitagimukafude.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2931/5239/files/44300522918.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0799/1195/files/37890134760.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9622/0572/files/kexiwurazud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonixalekena.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8724/0095/files/35802557442.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1785/4373/files/4489817679.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5287/4390/files/9311135029.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8734/7364/files/21256312616.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0115/9585/files/jowuwazijibokamab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1097/4111/files/fitatesufovenoti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9360/6046/files/vofede.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2905/4118/files/gipezegasakejawolul.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000088ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x88CE | 5292 bytes |
SHA-256: 9529cef3ba50fcc2b71e538719abf3cc149c436e29187c5c4f97437dcce951c3 |
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font_01_sfnt_off00009aab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9AAB | 16144 bytes |
SHA-256: dad2dc74f4858524783584030f920b7e5cde12f24f22644e29b9d8efb5acfb6f |
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font_02_sfnt_off0000cc14.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC14 | 16112 bytes |
SHA-256: e9f71365a2a9ea4b152c2f6701d7ccf33f67bf216d443f7f7b47b7c3311bc682 |
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