MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=sistemas+de+ecuaciones+lineales+ejercicios+resueltos. While no scripts were extracted, the sheer volume of links and the presence of a malicious redirector indicate a high likelihood of malicious intent, possibly to lead users to phishing sites or malware downloads.
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=sistemas+de+ecuaciones+lineales+ejercicios+resueltos In PDF document text
- http://tevulo.tornadoshelter.com/uploads/1/3/1/6/131606490/vatiw_nazovixeli_dozij.pdfIn PDF document text
- http://xesif.soundstonelaw.com/uploads/1/3/1/4/131453574/tipakiv.pdfIn PDF document text
- http://files.drydesign.co.uk/uploads/1/3/1/8/131871433/5679692.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/1/0436/5733/0853/files/abcd_telugu_movie_songs_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7192/1571/files/5th_grade_math_word_problems_worksheets.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8477/5577/files/bokorafubibixuxovaziveniv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitomomuwarusubewikujo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9180/3801/files/85694368973.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1284/0872/files/77552184197.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6422/2101/files/what_is_the_square_root_of_35.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7162/6659/files/vikekupewusupejimov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3631/9645/files/38105302912.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9874/3719/files/dropbox_paper_template_placeholder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8226/0384/files/oceans_hillsong_guitar_chords.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6189/3534/files/bcom_law_unisa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2739/0887/files/active_directory_windows_server_2012_tutorial.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0444/4015/8374/files/74412175934.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_off000088e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x88E7 | 5264 bytes |
SHA-256: 4002b26c93443c4e68783b86b7ee48f49625a18fd966bf2d212457e8857ae7e8 |
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font_01_sfnt_off00009aa7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9AA7 | 16776 bytes |
SHA-256: 05006ba83c850db5a068938f4ff1c0a7126397ea5019062fef63474ae5f5600c |
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