MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 User Execution: Malicious Link
The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The document body, though malformed, contains text related to 'relatorio de estagio engenharia eletrica pdf', suggesting a lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.
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/wb?keyword=relatorio%20de%20estagio%20engenharia%20eletrica%20pdf In PDF document text
- http://files.bandbac.net/uploads/1/3/0/7/130739084/3b8d959bf4.pdfIn PDF document text
- http://files.cowboysandangelsdanceacademy.com/uploads/1/3/2/7/132712306/gazipagodinotokodud.pdfIn PDF document text
- http://files.chrisgriffithdesigns.com/uploads/1/3/1/3/131379099/893051.pdfIn PDF document text
- http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.pdfIn PDF document text
- http://files.billingsjaycees.org/uploads/1/3/2/6/132682882/4ca68d0ee1865d.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/1/0430/8231/7975/files/rebebinelebamizapuxuma.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gowaluzefep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4722/2422/files/pibifaton.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6318/0438/files/kalat_introduction_to_psychology_10th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0292/1111/files/88154409056.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2627/6771/files/52191676049.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8320/9631/files/sotezotirub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3123/2674/files/56679469921.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9674/2815/files/karusope.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9869/4042/files/62896008174.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4246/4163/files/12193629478.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0160/1444/files/71402197926.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_off0000541c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x541C | 5212 bytes |
SHA-256: 4c4487286cef9b4ef2fdb972e49e80fd46c13e5313248738132005c403b284dc |
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font_01_sfnt_off000065d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65D7 | 10364 bytes |
SHA-256: c70ddda6ccbacd9f2484a8b6e0cd10e20eb1c7f6cc8503924b6ff6bab1d2cefa |
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font_02_sfnt_off00008922.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8922 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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