MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure for medical information, combined with urgency language. The ML classifier strongly indicates maliciousness, and the overall structure suggests a link farm designed to drive traffic to malicious sites.
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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=antepartum+haemorrhage+management+pdf In PDF document text
- http://files.wecanmarryu2.services/uploads/1/3/0/9/130969433/gawuraxu.pdfIn PDF document text
- http://files.caribbeanpsyarts.com/uploads/1/3/0/7/130739415/2951949.pdfIn PDF document text
- http://files.lfhhsonline.com/uploads/1/3/1/4/131453054/xibuvovifizede_gilomumerimab_zevagetudag.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/1/0431/1980/4578/files/5_day_workout_routine_for_beginners.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8072/6168/files/russian_formalist_criticism.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7343/7847/files/95514876242.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6745/7188/files/90758366961.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5312/9640/files/dubai_metro_map_high_resolution.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4506/7684/files/20618370789.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6863/6834/files/vonagodozaju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1347/9320/files/9904465876.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4981/8024/files/calculus_single_and_multivariable_6th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0221/5069/files/aristoteles_metafisica_libro_2.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6636/8935/files/nipalaladaviwujeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6816/1184/files/tabizojabotiwazubejowuga.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4089/7184/files/vexegumuzizex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7644/3543/files/94032191886.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_off0000b148.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB148 | 5236 bytes |
SHA-256: dc149d99ef72bd3fef71179fc7a42b4ade517a4274b621f7bb4482e3b14b6e96 |
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font_01_sfnt_off0000c2e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC2E7 | 10180 bytes |
SHA-256: 2692c8bffb6714b6f668ed59464373d33f1eecfcac111a4878c109bb9bf39633 |
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