MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, identified as a link farm, designed to direct users to external websites. One of these links, 'https://ttraff.ru/pify?keyword=aspergillus+spp+pdf', points to known malicious redirector infrastructure. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting a programmatic generation of the malicious content.
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=aspergillus+spp+pdf In PDF document text
- http://files.dianebattistello.com/uploads/1/3/0/7/130739789/0bf1fe13f1cc.pdfIn PDF document text
- http://files.nevillegreen.org/uploads/1/3/1/1/131164129/seduwofafonut_worajegabuvodi_fusotupadexupa.pdfIn PDF document text
- http://files.portlandharborwatertours.com/uploads/1/3/0/7/130776590/vowosaf_wixikafuj_firurizamiju_bipojigodis.pdfIn PDF document text
- http://files.scrippsnorthstar.com/uploads/1/3/0/8/130874026/webus_kokitasumamu_topumoze.pdfIn PDF document text
- http://files.lilydermis.com/uploads/1/3/0/7/130775465/rewuki.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/1/0433/7002/1014/files/2150835234.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9160/7190/files/bazumadu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2873/2314/files/kobepozo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0845/7877/files/somovenusipepuvugop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2886/4409/files/wovejitawiri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0428/7383/files/lebekomigosuto.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6200/1821/files/rakobuvapufutezivido.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4615/0039/files/24082227377.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0425/4615/files/46577701663.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1378/3199/files/34475352847.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0940/1251/files/38631672168.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2703/6322/files/judarekazixijajewu.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_off00009b09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9B09 | 4572 bytes |
SHA-256: 690df10aafff03ca2bd080fcfaf92d6c63cdffe95101643a4a642d3a9e2c3dce |
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font_01_sfnt_off0000aaa1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAAA1 | 10676 bytes |
SHA-256: 48fcf5ce45ea2340cc2bf58ab9fe7830e6f2c637b3f4748305182e0c5b9d2866 |
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