MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a link farm designed to appear as a syllabus for the UPSC civil service exam, but it redirects to a malicious URL (ttraff.cc). This suggests a phishing or social engineering attack aimed at directing users to potentially harmful content. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for malicious purposes.
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=upsc%20civil%20service%20exam%20syllabus%202020%20pdf In PDF document text
- http://files.johnbunyanbaptist.org/uploads/1/3/1/1/131163512/c1761954f49.pdfIn PDF document text
- http://files.rceassociates.net/uploads/1/3/1/0/131070867/9900860.pdfIn PDF document text
- http://files.prosseracupuncture.com/uploads/1/3/1/4/131437531/ravilenu.pdfIn PDF document text
- http://files.wheatongis.com/uploads/1/3/1/8/131871740/tiluwipuleruk_feginevivezis_kelovoteber_gelepigilo.pdfIn PDF document text
- http://files.ferrisstudios2.com/uploads/1/3/1/4/131407709/f2de5f8f327b91.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/1/0429/0471/5427/files/nidofusisowaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0936/6427/files/3108955940.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4329/9234/files/46225450897.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9236/9823/files/51700698874.pdfIn PDF document text
- https://ruxurogizipo.files.wordpress.com/2020/06/53115770712.pdfIn PDF document text
- https://koxezapujuf.files.wordpress.com/2020/06/61971959141.pdfIn PDF document text
- https://paxologon.files.wordpress.com/2020/06/49534611873.pdfIn PDF document text
- https://rotoxepodib.files.wordpress.com/2020/06/46269305628.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6430/3522/files/dawuxakibox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1044/0862/files/51232856024.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8292/3676/files/vepuzasowewos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4021/1097/files/viwapibefuzikin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1729/8342/files/meden.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5122/0120/files/57622935270.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_off00009391.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9391 | 5520 bytes |
SHA-256: 7b0142050f7b1b0927125475716276b72ac8d1d94c413173fde5e39b9d904da0 |
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font_01_sfnt_off0000a65a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA65A | 13020 bytes |
SHA-256: 2710913566558a8b08751b3b2ee060b8d3adb5c7abac20ae82f7f5ac4c58e38d |
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