MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for 'Human physiology by ak jain pdf download'. This suggests a phishing or social engineering attack aimed at directing users to malicious content. The PDF also hosts a large number of links to other PDFs on Shopify domains, potentially as a SEO spam or link farm tactic to obscure the malicious redirector. 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/wb?keyword=human%20physiology%20by%20ak%20jain%20pdf%20download In PDF document text
- http://files.fcagdept.com/uploads/1/3/1/6/131606486/2542363.pdfIn PDF document text
- http://files.1stpocoscoutinggroup.com/uploads/1/3/0/8/130813514/d3b424db.pdfIn PDF document text
- http://files.fortclarkdays.org/uploads/1/3/1/4/131411539/lojefinukorivesosim.pdfIn PDF document text
- http://files.rubyscardsandgames.com/uploads/1/3/0/7/130776640/9809410.pdfIn PDF document text
- http://files.brittmaplesyrup.com/uploads/1/3/1/3/131383953/zodevanusopeb-vadikigumare.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/1/0431/9779/2420/files/marizutovetotogo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3699/9842/files/mojumot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7788/6367/files/46812603049.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewobaropelizovijekozuji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5907/6510/files/73417455609.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9544/8997/files/54093971485.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0071/6694/files/gixamosigi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6167/4133/files/53055305764.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9845/4693/files/wobipupejewozefabupe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4272/5275/files/7148541979.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7069/9160/files/xixirok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7519/0422/files/68369271275.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7938/4744/files/90465881779.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7352/8213/files/65472001888.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_off000055cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x55CC | 5476 bytes |
SHA-256: 54749d518676e2993168df6159b297fa2fc4083b07f4f9063a66651d3a777f3a |
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font_01_sfnt_off00006847.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6847 | 10112 bytes |
SHA-256: 16d8cf49b94996094dc354a8a67310e2c7c18e2cb31a62d35d762585cbcbdc67 |
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