MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a redirector infrastructure identified as malicious. The document body, though partially obfuscated, contains text related to 'primary auxiliary verbs' and a URL that appears to be the primary lure. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL supports the conclusion that this PDF is designed to lead users to harmful 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.cc/pify?keyword=use+of+primary+auxiliary+verbs+pdf In PDF document text
- http://files.dvanminsel.com/uploads/1/3/0/9/130969580/joruno.pdfIn PDF document text
- http://files.bikewashtenaw.org/uploads/1/3/1/0/131070207/togusidusokuj.pdfIn PDF document text
- http://files.rchatierrasanta.com/uploads/1/3/1/3/131383892/vuzasolosuj.pdfIn PDF document text
- http://files.designsbykneeknee.com/uploads/1/3/0/7/130776046/jesopevol.pdfIn PDF document text
- http://tedaj.abiblo.com/uploads/1/3/0/7/130775734/pugiv-puwewidu-kewirenasas-sujewekowa.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/1/0429/1490/6275/files/17374724900.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7667/2918/files/zuvimepuxirijuxifenosomaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5622/5686/files/xibagadab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4394/5622/files/94402772929.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0311/7719/files/disney_animal_kingdom_map.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3848/1320/files/adjectives_and_adverbs_easy_exercises.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3374/7878/files/24584678526.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/7355/1001/files/how_to_make_stone_fence_in_minecraft.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2821/6983/files/viwexixizig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8660/0609/files/clinical_anatomy_of_the_brachial_plexus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5335/1066/files/75953760279.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4172/6370/files/piredugok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3127/3365/files/zipigatabuju.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_off00005df7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DF7 | 5548 bytes |
SHA-256: e9906a2ac4b2a3d98afd9d751c1ca22c817c17eaeefc673919ac5aef2512481a |
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font_01_sfnt_off000070c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70C8 | 9828 bytes |
SHA-256: 839bbbec3cc722cbeee61fcd6309e9b309918f1012c2e85f90a80659ef5f9dd6 |
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