MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=recirculating+aquaculture+book+pdf'. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious.
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.cc/pify?keyword=recirculating+aquaculture+book+pdf In PDF document text
- http://files.northernsmokers.com/uploads/1/3/1/4/131437464/sodom.pdfIn PDF document text
- http://files.thelinksconnection.com/uploads/1/3/0/8/130814432/votaz-katirigaj-jolodoraziw.pdfIn PDF document text
- http://ribatexek.leanasykescounseling.com/uploads/1/3/1/3/131398140/duwuzutit-nukibeg-bojimidamen-tidifisud.pdfIn PDF document text
- http://files.gabreedesign.com/uploads/1/3/1/4/131452824/buvoxolagivufife.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/1/0430/2376/1571/files/korean_verb_conjugation.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/1867/1512/files/piano_beginners_songbook.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1961/5904/files/proyecto_de_grado_telecomunicaciones.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7084/9181/files/63446090524.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94766401197.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1474/8322/files/bratstvo_crnog_bodea_17.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9581/0455/files/fulosimewawir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9182/0711/files/linoguguserakimikaxadovi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7511/6964/files/wefafalarusu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9151/5797/files/nukezibugepurebisovezomu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4375/0039/files/adobe_photoshop_7._0_tutorials_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.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_off00004d3e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4D3E | 5364 bytes |
SHA-256: 77bc512c5c205ca79cd307dc2d9e4f90a789e5a23fa9a6991405f4e6fc02377d |
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font_01_sfnt_off00005f78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F78 | 10712 bytes |
SHA-256: af767fa78dd2d60467074b5a0a3cf0f479db147a2d9e8f6be9de68425bb6210d |
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font_02_sfnt_off0000838a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x838A | 4324 bytes |
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
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