MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment
T1059.001 Command and Scripting Interpreter: PowerShell
The PDF contains a significant number of embedded links, many pointing to external PDF files hosted on various domains, indicating a link farm. One critical heuristic identified a link to known malicious redirector infrastructure. The ML classifier also flagged this PDF as malicious. The primary attack pattern appears to be SEO manipulation or content distribution via a large number of links.
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=naming+carboxylic+acid+worksheet+pdf In PDF document text
- http://files.rintheyordle.com/uploads/1/3/2/6/132696263/zaluwovekire-vuduxalabomo-darofogososonef.pdfIn PDF document text
- http://gatite.jvjewelers.com/uploads/1/3/0/7/130775607/9d2d13ef1a.pdfIn PDF document text
- http://mutidude.progressplace.org/uploads/1/3/1/6/131606349/1978203.pdfIn PDF document text
- http://rabazawil.savannahclaycommunity.com/uploads/1/3/1/1/131164100/8436380.pdfIn PDF document text
- http://files.marianimediation.com/uploads/1/3/1/4/131406437/b7fec3857.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/1/0428/9835/8432/files/xekosipavejidowusa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9610/5375/files/goodrich_and_tamassia_algorithm_design_solutions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9748/9561/files/82234940873.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6674/4216/files/54172558673.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6104/1569/files/passive_design_strategies_architecture.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9127/1586/files/kokovem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1468/3815/files/fowowuva.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5680/8615/files/27160936609.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0078/1208/files/77428740422.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pujar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9980/0217/files/rita_pmp_exam_prep_8th_edition.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_off00005c7e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C7E | 5792 bytes |
SHA-256: b4378f61fda4687d34f9ba8bf43cd8caef75d3fd62a52a6c928bf3baf2095276 |
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font_01_sfnt_off00007018.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7018 | 10232 bytes |
SHA-256: 8e4a237564195e1b2be0a779c3051b2166e9b4efb1101c9089998163cf0fc812 |
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font_02_sfnt_off000092ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x92EC | 4324 bytes |
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230 |
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