MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious due to a critical heuristic firing indicating it contains a large number of embedded links, forming a link farm. One of these links, 'https://ttraff.ru/wb?keyword=soundarya%20lahari%20pdf%20in%20sanskrit%20with%20meaning', points to known malicious redirector infrastructure. The document body appears to be corrupted or heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous external links strongly suggests a redirection-based attack.
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/wb?keyword=soundarya%20lahari%20pdf%20in%20sanskrit%20with%20meaning In PDF document text
- http://files.lukeolson.com/uploads/1/3/0/9/130969218/83aa27d3.pdfIn PDF document text
- http://files.flawlessskinstudio.com/uploads/1/3/1/1/131164002/4000228.pdfIn PDF document text
- http://files.mythfreefinancial.com/uploads/1/3/1/6/131636957/5446867.pdfIn PDF document text
- http://files.nducuwangugi.com/uploads/1/3/0/9/130969555/gimuviri-megatanizus-selusifo.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/1/0431/8153/9483/files/16323641331.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5580/0739/files/nezepigu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6189/4565/files/degojididujesun.pdfIn PDF document text
- https://mululirop.files.wordpress.com/2020/07/forefaruwobe.pdfIn PDF document text
- https://vawopiwu.files.wordpress.com/2020/07/20282187919.pdfIn PDF document text
- https://jolubinej.files.wordpress.com/2020/06/jajumutinaruko.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0310/1863/files/18265142002.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4253/7629/files/67599272733.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9816/8727/files/begunugupirurumibaleja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5845/3918/files/xedemuwaxawaju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7294/5304/files/vefudovagabuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9416/3109/files/wejadejogarusori.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9811/2167/files/24787847202.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6587/6390/files/15078522946.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2273/7830/files/57432055636.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_off000137af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x137AF | 5700 bytes |
SHA-256: d0ac0504f90867dd2d78272bd62d0920aa03a79341a0d53534179f427f1fce6b |
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font_01_sfnt_off00014af7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14AF7 | 10052 bytes |
SHA-256: 83e3a5d17714a9ec7a962f8d2fef63ba2dc9e7733bcc06b8835bb4aea172f876 |
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