MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=articulos+cientificos+cortos+para+ni%25C3%25B1os+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to scientific articles and the wkhtmltopdf tool, suggesting a lure to download content. The presence of numerous Shopify URLs, while many are benign, indicates a pattern of hosting content on legitimate platforms to mask malicious activity.
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=articulos+cientificos+cortos+para+ni%25C3%25B1os+pdf In PDF document text
- http://files.zizosa.com/uploads/1/3/2/6/132695531/putupuvufemaz-luzaxawufiwu-muminomuw-xemejegusozaxo.pdfIn PDF document text
- http://babutexuz.sgdrumacademy.com/uploads/1/3/1/3/131378776/a5ae8c416d.pdfIn PDF document text
- http://puxaz.regenerateyourauthenticnature.com/uploads/1/3/0/8/130814397/88da22143.pdfIn PDF document text
- http://files.heldministries.net/uploads/1/3/0/8/130814980/pazejut.pdfIn PDF document text
- http://naxefeta.edwardfanphotos.com/uploads/1/3/1/3/131380429/tetiveze.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/1/0428/9085/4566/files/ctet_answer_key_2020_paper_1_set_ka_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2818/4215/files/97179470677.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6770/3450/files/4235479516.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2258/0886/files/14599307849.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5534/8888/files/mitikonekupaxojizuroduxa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2280/3363/files/bejigumitufazanutagexe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6097/6021/files/12101461899.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7100/5082/files/nomagevov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1802/6140/files/dodifumawumujodijinuwobu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2383/4011/files/diablo_2_druid_builds.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6187/9719/files/history_of_caliphate_in_islam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5784/8224/files/master_yuan-_ma_the_book_of_programming.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/4029/8392/files/cisco_ccna_lab_workbook_200_125.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_off0000716e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x716E | 5348 bytes |
SHA-256: a8523e921c3b704abe25bda1475975354311e0915c8c5448e45e6c4195848cdb |
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font_01_sfnt_off0000836e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x836E | 11308 bytes |
SHA-256: 9e78e70ca4ca7f16d13821cdada1797bcf7522cdeb6378f5208e177c1840fbc8 |
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