MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links and text designed to lure users into downloading content, specifically referencing 'Air force y group question paper pdf download'. The primary link redirects through 'ttraff.ru', which is flagged as a malicious redirector. The document body also contains numerous links to Shopify-hosted PDFs, likely part of an SEO link farm to obscure the malicious redirector. The ML classifier strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/wb?keyword=air%20force%20y%20group%20question%20paper%20pdf%20download In PDF document text
- http://files.carpenterschool.org/uploads/1/3/1/4/131483361/8061639.pdfIn PDF document text
- http://vuzido.apayoart.com/uploads/1/3/0/8/130874284/51debcda2a647f.pdfIn PDF document text
- http://files.silverfoxpottery.com/uploads/1/3/1/4/131407802/woburunukud.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1270/1860/files/7618104953.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7738/6918/files/zukifurovajanopawoxa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4797/7114/files/sipigijejesogif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7616/4515/files/fluid_mechanics_white_8th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2712/8735/files/66245942756.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6559/8364/files/pathophysiology_of_myocardial_infarction.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/0392/5912/files/72586291817.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/7613/0718/files/abnormal_psychology_barlow_7th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2416/1704/files/assessment_procedures_for_counselors_and_helping_professionals_9th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2469/4942/files/jetepejulagerijerefape.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5585/6281/files/kodak_esp_office_2150.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005c86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C86 | 5632 bytes |
SHA-256: 05c7e2cc1b6c754cf522d056428b9f2adc1392b5bb8a10eb442d7d099686d5f3 |
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font_01_sfnt_off00006fdf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FDF | 10260 bytes |
SHA-256: c4fceb7b132dd8950a51cab894e8cf43af77dc7d31ccc4e4e03dbb9678984bd2 |
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font_02_sfnt_off000092f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x92F8 | 2832 bytes |
SHA-256: a29041989fc328615323ee4eba452f56691b7d20c3ae22c6464357b47f37bd2d |
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