MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The document body, though heavily obfuscated, contains references to academic finance texts and the malicious redirector URL, suggesting a lure to trick users into downloading potentially harmful content. The ML classifier strongly flagged this PDF as malicious.
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=essentials+of+corporate+finance+7th+edition+pdf In PDF document text
- http://files.bandyphotos.com/uploads/1/3/2/6/132681352/wovebe-maletiwapowoba-temegim.pdfIn PDF document text
- http://files.risingravenband.com/uploads/1/3/1/3/131384018/buvab.pdfIn PDF document text
- http://files.solomonrecovery.com/uploads/1/3/0/9/130969514/saziradefotene_bovogaf_nanewajol_sodapobobis.pdfIn PDF document text
- http://files.tucanursing.org/uploads/1/3/0/9/130969377/6326045.pdfIn PDF document text
- http://files.eztaughtme.com/uploads/1/3/0/7/130776031/zesubiwe_fazif.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/1/0437/7929/3338/files/98071696694.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4957/3784/files/95281900575.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5570/9341/files/savinurodabarizedunim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/7300/9819/files/98586742126.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6567/8755/files/padusobubev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8996/0865/files/xexudunivi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8304/6813/files/zobavo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7981/1750/files/sinosoruraredugujad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/7300/9819/files/36482062712.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7547/7405/files/98396008029.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8531/5737/files/wafuluporaxomokidefemipak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5765/1613/files/wusunabanavo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1044/9830/files/54825060481.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49221060197.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_off00004c61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4C61 | 5280 bytes |
SHA-256: db74f41702eac1f4ac5bd59996f3f3754383c0d38d86acb019874bbdc74adcb8 |
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font_01_sfnt_off00005e59.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E59 | 9520 bytes |
SHA-256: 33f8e4095137176af9416137ff4eb48cace86e329e37a0cb13d7992a8ce311a5 |
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