MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or SEO poisoning tactic. The primary redirector URL, 'https://ttraff.ru/pify?keyword=introductory+circuit+analysis+boylestad', is flagged as malicious. This indicates the document's purpose is to drive traffic to malicious infrastructure, likely for phishing or malware distribution, under the guise of offering free 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=introductory+circuit+analysis+boylestad In PDF document text
- http://taxes.n3vem.com/uploads/1/3/0/8/130813059/tovezolegi.pdfIn PDF document text
- http://files.chiciconic.com/uploads/1/3/0/7/130775151/senixasupaxi.pdfIn PDF document text
- http://tabajozez.unique-beginnings.com/uploads/1/3/2/7/132740905/3ce8177b8d.pdfIn PDF document text
- http://files.ccireenacting.westhistory.net/uploads/1/3/1/4/131483685/vufarinowidofi-fipilikozel-nabofimunugo-xomomonuvajux.pdfIn PDF document text
- http://files.clovercaredoulaservices.com/uploads/1/3/1/4/131410545/tivanozejin_wezev_nopibutal_lituruvunupado.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/1/0432/9072/2454/files/annamalaiyar_songs_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6542/5570/files/48669744839.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8072/1311/files/6th_grade_math_workbook_with_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1438/1980/files/menotifikupojakogefuburov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7103/6835/files/gorolibefukik.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3791/7345/files/bowolumiwesasugadujumeto.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9542/5191/files/61290343448.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7630/2486/files/fokoseki.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7936/8858/files/may_june_2019_calendar_template.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4337/2699/files/trees_in_python.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0791/7729/files/attorney_authorization_letter_template.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1416/8480/files/mitabuvinodoweruxoge.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.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_off00006905.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6905 | 5112 bytes |
SHA-256: c61f4041ce1624d647e83d9a5010ccd64d49ba8ee37642ea4fe305b1808b2632 |
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font_01_sfnt_off00007a70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A70 | 10132 bytes |
SHA-256: f9fd500af6d723d0dcbf5d2e8ebd9bdf1517066d1d2934c8cedf967c1ea8e47b |
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