MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting an attempt to manipulate search results or direct users to a large number of potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated.
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=cuet+admission+circular+2020+20+pdf In PDF document text
- http://files.jorgenlauritzen.com/uploads/1/3/1/4/131437750/webutubuli_jexovafejo.pdfIn PDF document text
- http://files.montclareschool.net/uploads/1/3/2/7/132741743/moxobopig.pdfIn PDF document text
- http://files.elpasoalfalfa.org/uploads/1/3/2/7/132741064/97929961aa5.pdfIn PDF document text
- http://files.indivisiblecrossville.org/uploads/1/3/1/4/131437532/zosolazanewomu.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/1/0431/1302/1607/files/fimogobisuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1682/2692/files/39416504629.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0665/5642/files/biruxizixulasujetupavuj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3332/9817/files/24507680828.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5276/9192/files/2847269017.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5249/8070/files/13846711060.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jerozex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3803/1518/files/fexonekoluboguzupolotix.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tutokufumetuja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8713/4882/files/22235300894.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2033/6802/files/wonavulinidepamujumaxipa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7777/1162/files/senusazitatobivuvara.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006c11.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C11 | 5480 bytes |
SHA-256: acd694ca6118bf31adb4c0136cbd731fc38b283e537c6f9b1383928a438eb0a1 |
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font_01_sfnt_off00007e94.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E94 | 7884 bytes |
SHA-256: 4df7ad0f79f3d5c54687992e03b84d24ad6b57ffeda062aa783d9bdadb828bee |
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font_02_sfnt_off00009804.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9804 | 9816 bytes |
SHA-256: 542cf2438a11bc21a1732dc7fbd8d5b22192bf7c2cf00c82dd818306eecaeccc |
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