MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though partially corrupted, includes the title 'Proofs involving congruent triangles worksheet' and the malicious URL, suggesting a lure to download potentially harmful content. The presence of many external PDF links indicates a link farm strategy, likely for SEO poisoning to attract victims.
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=proofs+involving+congruent+triangles+worksheet In PDF document text
- http://files.ccwestlibrary.com/uploads/1/3/1/3/131378953/vogexilotuj-siniwovumexapoj.pdfIn PDF document text
- http://files.cottonshed.co.uk/uploads/1/3/1/3/131383318/49756.pdfIn PDF document text
- http://gaxod.drjaredwojnicki.com/uploads/1/3/1/6/131637459/8258121.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0439/6879/0686/files/dogibagifoxabusonedemazog.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1378/3199/files/60788429943.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6891/4838/files/27637037228.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6068/1111/files/voyager_trike_kit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6661/4175/files/wujuxuvuxamabokawarobu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8348/9687/files/66158535621.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5216/2462/files/tcs_performance_appraisal_form_filled_sample.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7518/2485/files/28088276022.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1582/3772/files/10921739371.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7401/0782/files/63851647530.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000072d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72D4 | 5244 bytes |
SHA-256: 79af8f53f14acd76747c26f874c980e51e36c723aa8d42215d217ad2ad8303b9 |
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font_01_sfnt_off000084b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x84B6 | 10328 bytes |
SHA-256: db193922bb24515a037ef775bf48939b61cf46985088c5bcb2fc1de6cea21b3a |
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font_02_sfnt_off0000a823.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA823 | 16256 bytes |
SHA-256: 23cddd42c17e4521c62a9e3e786a9e95a9a95c2807d327981898bd38117538af |
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font_03_sfnt_off0000bdaf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDAF | 4324 bytes |
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
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