MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to mimic free downloads. One prominent link directs to a known malicious redirector, suggesting a phishing or malware distribution scheme. The ML classifier also strongly indicated maliciousness.
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=principles%20and%20techniques%20in%20combinatorics%20pdf%20free%20download In PDF document text
- http://files.vasilisaart.com/uploads/1/3/1/4/131438353/bifulafomaxelunefef.pdfIn PDF document text
- http://files.sleepfairwaymedical.com/uploads/1/3/1/3/131380848/kasameki.pdfIn PDF document text
- http://files.lordsperformancehorses.com/uploads/1/3/2/6/132681985/6de83c.pdfIn PDF document text
- http://files.writercassmichaels.com/uploads/1/3/1/8/131856627/4144677.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/1/0437/1464/2069/files/duwuvokupon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5248/2208/files/75040784659.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8343/9011/files/zelorirubaxolulale.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5095/1066/files/94650970230.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4391/2856/files/fipimipo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5608/4630/files/taxulu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4718/1718/files/xadesuzukoga.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0097/8853/files/84215774092.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1316/8542/files/94355782853.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1882/0511/files/2007_honda_fit_service_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulanevu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5207/2086/files/97812382483.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4431/4024/files/23853072199.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1334/0312/files/bomaxosikapavexelim.pdfIn PDF document text
- https://doi.org/10.1142/9789814355162_0002https://doi.org/10.1142/9789814355162_0004https://doi.orgIn 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_off000043ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x43EC | 5752 bytes |
SHA-256: c044e3f6e5f3e84b9a08a6cb9482daf7d542a519dbcd50d6b56ff5c0ac355729 |
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font_01_sfnt_off00005761.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5761 | 8216 bytes |
SHA-256: e394ddbc112c51668fc5c3bfbc10ee9fb47092d366ad526ccc4a355d9f3a918c |
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