MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, with a critical heuristic firing indicating these links point to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to mathematical content, likely to disguise the malicious intent. The ML classifier strongly indicates maliciousness, and the presence of redirector links points towards a phishing or malware distribution scheme.
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=angulos+entre+rectas+paralelas+y+una+secante+pdf In PDF document text
- http://files.singletree-emporium.com/uploads/1/3/0/7/130775982/1ca523.pdfIn PDF document text
- http://files.morningrosehouston.com/uploads/1/3/0/9/130969169/75961a.pdfIn PDF document text
- http://files.ambleandwarkworthrotary.org/uploads/1/3/1/8/131856285/bokivolifaruro-fipelu-tolenemosa.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/1/0434/7976/1061/files/japexufa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3134/7868/files/40866738216.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5486/5320/files/51976686288.pdfIn PDF document text
- https://loralamodi.files.wordpress.com/2020/06/bikoje.pdfIn PDF document text
- https://zinisarov424395058.files.wordpress.com/2020/07/zewukizapum.pdfIn PDF document text
- https://fetujinuzi.files.wordpress.com/2020/06/damebuxoxomavitezuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6678/5949/files/pivetugidigatam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4098/0643/files/timatoparilu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3040/5535/files/zizatobilimigufesosezipas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1410/2941/files/zoxidevejuxejuwenuxisama.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7719/8229/files/fotelibopujazasifamewe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5661/0971/files/fisovojug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5666/8573/files/11464424818.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7312/7079/files/dobekoxufatafaginobale.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_off00007628.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7628 | 5248 bytes |
SHA-256: 2c4bf73f6ac968e279d09700618c86503c091433e89b4f2ae1c23bdd7f06ceed |
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font_01_sfnt_off0000881d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x881D | 10452 bytes |
SHA-256: 35f043ddd46b9043aa74f9933537ca6de6296f26e443b2d0d39a55ac5bbfe222 |
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