MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external resources, many of which are SEO-optimized and lead to a redirector. The primary redirector URL is identified as malicious, suggesting a phishing or scam attempt to trick users into downloading potentially harmful files. The ML classifier strongly indicates maliciousness.
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.com/pify?keyword=naive+set+theory+halmos+pdf In PDF document text
- http://files.thegreenthumbgardens.com/uploads/1/3/2/7/132740291/jikepafolarakav.pdfIn PDF document text
- http://bilirer.cindysasso.com/uploads/1/3/1/4/131407552/2650325.pdfIn PDF document text
- http://files.catalyst-now.com/uploads/1/3/1/0/131070527/sizodu.pdfIn PDF document text
- http://zenof.robbenoptics.com/uploads/1/3/2/7/132740214/mezorunuvev_sapakikuxi_pimonatonel.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/1/0429/8126/1466/files/pernkopf_topographic_anatomy_of_man_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4575/6821/files/gupopisalulawipuke.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1028/3931/files/81691286730.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3963/8179/files/99661843890.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5825/6286/files/xazugudetaruret.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0089/7440/files/agenda_and_minutes_format.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/4674/3709/files/mail_merge_with_attachments_word_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1297/9869/files/16510325367.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5383/3637/files/58581968507.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3885/0719/files/hearthstone_open_all_packs.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0130/6526/files/ragulapijoxazakewuf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9917/6612/files/dulapul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4243/0362/files/64076548999.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005df4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DF4 | 5412 bytes |
SHA-256: 30de7c5839df5c319342aa86bd3126e6ee3686e81144f29ce8ce39a9cbfd5248 |
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font_01_sfnt_off0000704a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x704A | 10676 bytes |
SHA-256: a9d10a890dc9b9c7a92686a78333042387d5bff4ad0d7573fc083879fcd6f984 |
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font_02_sfnt_off000094f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x94F0 | 16616 bytes |
SHA-256: ebd679b8caa9f121ae9402beabe02a9f303e5b29e75b412dfefd66b13e2e5d6a |
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