MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF file contains numerous embedded links, a tactic often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/wb?keyword=best%20ocr%20software%20pdf'. The document body also contains this URL and other links, some of which point to potentially unknown domains. The presence of a 'download button' lure further supports the malicious intent.
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=best%20ocr%20software%20pdf In PDF document text
- http://zoziwi.ignite-the-change.com/uploads/1/3/1/3/131384281/lizad.pdfIn PDF document text
- http://files.interfaithweddingrabbi.net/uploads/1/3/1/3/131379615/dozaziwozit.pdfIn PDF document text
- http://nodizol.nalomelihoney.com/uploads/1/3/0/7/130738870/814929.pdfIn PDF document text
- http://tisuw.stripperguy.com/uploads/1/3/1/0/131070847/towab_jokuwi.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/1/0435/2062/2756/files/agendas_2020_en_para_descargar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7827/0619/files/92500588024.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1357/6603/files/bumerasa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9446/6969/files/pogo_game_app.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7027/5237/files/fufutegazo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7879/4917/files/zuwobun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4462/5822/files/nonobudafejekomagenuzuvul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7180/7391/files/77883710725.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4982/6969/files/butterfly_valve_tozen.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7480/4126/files/candidate_testing_service_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1906/7815/files/vazizubutivexamet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6761/2063/files/jeep_wrangler_parts_catalog.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_off00006539.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6539 | 5260 bytes |
SHA-256: d777b8c96b3fa82f5076bb5e40b2c766c333370753a894790bc30d682d247801 |
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font_01_sfnt_off0000773a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x773A | 11276 bytes |
SHA-256: 9cad67486a5ce0ec96c1a56eb85b7dcfaf2cfcec00b7cd5f719e453c3698d06a |
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