MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm designed to attract traffic. The embedded URL https://ttraff.ru/wb?keyword=fortress%20besieged%20english%20pdf is the primary indicator of malicious intent, likely serving as a gateway to further malicious content. The document body, though heavily obfuscated, contains this URL and other links, reinforcing the link farm and redirector attack pattern.
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/wb?keyword=fortress%20besieged%20english%20pdf In PDF document text
- http://files.logcabinrental.ca/uploads/1/3/0/7/130738701/48ab9.pdfIn PDF document text
- http://files.fwsomusicians.org/uploads/1/3/1/1/131163667/nemipibumi.pdfIn PDF document text
- http://files.californiadaylilies.com/uploads/1/3/1/3/131381919/4690694.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/1/0430/9617/8849/files/mopop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1061/2635/files/rezuzitosad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7081/5397/files/simple_business_plan_sample.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5804/4828/files/57421067093.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9613/7111/files/chuck_mangione_feels_so_good.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5318/7221/files/29342895299.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6982/4414/files/25911203424.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2692/3172/files/lezuvipomavekodotasi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4473/2065/files/wedozi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9775/9643/files/joxemikajawu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80789229335.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/0214/8510/files/juniroxa.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000072cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72CF | 17812 bytes |
SHA-256: 03b429f8d60d6c2bd9ad04e61f347ee8eaeee89458bdbd1bc6a99717e39b248a |
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font_01_sfnt_off0000ab08.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAB08 | 4976 bytes |
SHA-256: 41012390c9a9eec104274a2b246d0e1616e421f957f9c6dda80020b635a5bd66 |
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font_02_sfnt_off0000bbe3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBE3 | 10452 bytes |
SHA-256: cc1516ee15d37a45386a5bd41441afbef6a10534a620294d1b121f99fae8b915 |
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font_03_sfnt_off0000de9f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE9F | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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