MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, appears to be a lure related to 'nursing entrance exam question papers'. The linked URL is likely intended to redirect the user to a malicious site or download further malware. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse.
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=post+basic+bsc+nursing+entrance+exam+question+papers+pdf In PDF document text
- http://files.everbloomingcreative.com/uploads/1/3/1/4/131483138/wazosojariv-robisulokivibu-xofinamu.pdfIn PDF document text
- http://files.sapbushfarmstore.com/uploads/1/3/0/7/130738876/abb52.pdfIn PDF document text
- http://files.mrshaolebrownie.com/uploads/1/3/2/6/132682070/2d820.pdfIn PDF document text
- http://files.francespanunto.com/uploads/1/3/2/7/132710624/jafolafomo_mosifuxip_rusavil.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/1/0435/3343/5032/files/96886123592.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0318/2243/files/84340107614.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6516/3422/files/zomano.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4028/4577/files/21501387227.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2246/6727/files/tikojabugolobigexuwopi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1097/4111/files/jomenunipuxunoramisifo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3393/4496/files/zatedesumasu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5802/7928/files/tukat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7201/1941/files/70147814441.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2561/3475/files/jovesugigemerusodoxujog.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15125842299.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1095/6196/files/54957109465.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7727/0678/files/99825246365.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6674/4216/files/43567236414.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_off00006e56.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E56 | 5660 bytes |
SHA-256: 2a729eacbc02fe453f385d96000b1756fabfa668e901d434a489aa3188248519 |
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font_01_sfnt_off0000816c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x816C | 10324 bytes |
SHA-256: 6cde27438225588f8b0e637741de11cbf050c70b7debd69d13bcbac8ebb888e3 |
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font_02_sfnt_off0000a4a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA4A8 | 16092 bytes |
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848 |
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