MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though partially corrupted, includes the lure "medical parasitology questions and answers pdf" and the malicious URL. The PDF_SEO_LINK_FARM heuristic also indicates a large number of embedded links, suggesting a link farm designed to attract traffic. No scripts were extracted from this sample.
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=medical%20parasitology%20questions%20and%20answers%20pdf In PDF document text
- http://files.russianspoon.com/uploads/1/3/0/8/130874369/8060980.pdfIn PDF document text
- http://xagikaz.brittanysloan.com/uploads/1/3/1/1/131164250/jiger.pdfIn PDF document text
- http://files.ironstonemeadery.com/uploads/1/3/1/4/131482976/f3e0f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0432/0778/6651/files/safox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4276/4962/files/indore_master_plan_map_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9472/7074/files/apache_server_configuration_in_linux_step_by_step.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5560/4121/files/juzurunaforujonepu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9689/9733/files/78984302035.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5530/0249/files/17291585331.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3018/4087/files/afcat_1_2020_result.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7540/3936/files/63140337354.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8424/2334/files/roserava.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8289/8840/files/human_anatomy_atlas_3d.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5943/6951/files/munchkin_boiler_problem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9722/6402/files/sibuvajazutupedemufipiso.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000651b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x651B | 5528 bytes |
SHA-256: 805989fdc52794e9a7e159c01e4065b4f6dfc9e34e136dfdedb3f625d7187571 |
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font_01_sfnt_off00007803.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7803 | 13788 bytes |
SHA-256: 7bd91fe80aee2d57a6384066bb1ec45fb6ca4e90c77f42a76766af8352a10e58 |
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font_02_sfnt_off0000a352.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA352 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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