MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment
T1204.002 Malicious File: Malicious Link
The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL points to a redirector, and the document body contains numerous links to external PDFs hosted on various domains, suggesting a SEO poisoning or link farm attack. The ML classifier also strongly indicated maliciousness.
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=diatonic+arpeggios+pdf In PDF document text
- http://files.escapemachine.com/uploads/1/3/1/8/131871633/rowegowexu-wemepaza-zanimuzowop-jefut.pdfIn PDF document text
- http://files.llecllec.com/uploads/1/3/2/6/132682076/01c0795fee2a.pdfIn PDF document text
- http://files.sharingourjourney.com/uploads/1/3/2/6/132681836/4859272.pdfIn PDF document text
- http://files.domchacon.com/uploads/1/3/1/3/131383982/16034fde99a.pdfIn PDF document text
- http://nunuwew.samahanfilamheritage.org/uploads/1/3/1/4/131407089/newexibot-tazoroza.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/1/0432/3406/6594/files/73566319521.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6819/4978/files/lolixeselibi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4355/2416/files/amphioxus_characteristics.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6301/7629/files/1702133001.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1747/0101/files/xutobibakadaverimaje.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7909/0855/files/3577275934.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3368/8226/files/occupational_safety_and_health_standards_as_amended_dole_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30553092986.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5769/2315/files/13472829673.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5339/1765/files/78459560822.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0204/4316/files/mr_heater_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4976/3494/files/25402760761.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_off00006b96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B96 | 5292 bytes |
SHA-256: 29dc19a9e07b58549fedfb8cf3b3a3e87cb78cf14dd37a9f934e51ae528ecfba |
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font_01_sfnt_off00007d97.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7D97 | 3020 bytes |
SHA-256: 4fd8e84eed6b1f46b71c08ca94f3bd999c71f4bb10ba56db7403e286ee3ac98d |
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font_02_sfnt_off000089d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89D2 | 10476 bytes |
SHA-256: 4193c7960f1d010cbefa5a15cd8d5b7f4d851711ce5c169a5953cfc3e7f8068e |
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