MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=materiales+isotropicos+pdf' which is flagged as malicious. Another heuristic, PDF_SEO_LINK_FARM, indicates a large number of external PDF links, suggesting a link farm designed to attract traffic or distribute content. The ML classifier also strongly flagged this PDF as malicious.
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=materiales+isotropicos+pdf In PDF document text
- http://files.danberkey.net/uploads/1/3/1/4/131453823/jolego_memux_puzalemozotil.pdfIn PDF document text
- http://radiwi.gemwomen.org/uploads/1/3/0/7/130740072/6609032.pdfIn PDF document text
- http://files.lakesideopenbible.com/uploads/1/3/0/9/130969470/4857133.pdfIn PDF document text
- http://files.mirchaiya.com/uploads/1/3/0/8/130814329/3d6299288222.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/1/0437/2358/7736/files/menejek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2518/4421/files/luresazamodapexoruwer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0674/6011/files/number_format_php.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2484/0861/files/ley_de_arbitraje_en_colombia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4210/2679/files/how_to_play_backgammon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4987/6630/files/good_manufacturing_practice_gmp_guidelines.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1588/9305/files/wuliginilikenovorojuda.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0333/0208/files/vurefejaxokenivug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1430/5430/files/lotujurobomeputadogeles.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8095/8617/files/23881026512.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3538/6265/files/767611992.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9799/7991/files/85229930343.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7505/1421/files/reproduction_in_amphibians.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1761/7057/files/sebojogoxunisuvu.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_off00004fe2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4FE2 | 4836 bytes |
SHA-256: 1004a63211599c7331ee30ebf7b9371ec7390d89e6e9c77accc35c2311364350 |
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font_01_sfnt_off00006065.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6065 | 9572 bytes |
SHA-256: 448e9002cbae24fb2be613ab154317c2195f1926449eff51ffcd5801b0cdba61 |
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font_02_sfnt_off00008111.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8111 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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