MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the text "Paediatric asthma guidelines sign" and the malicious URL. The PDF also contains a link farm heuristic, indicating a large number of outbound links, many of which are hosted on cdn.shopify.com, with the first listed being a potential lure. The ML classifier also 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.ru/pify?keyword=paediatric+asthma+guidelines+sign In PDF document text
- http://files.kiwibirdphotography.com/uploads/1/3/1/8/131857476/f0a1ef182175e5.pdfIn PDF document text
- http://files.phithetapsi.org/uploads/1/3/1/3/131398380/30321eec6337.pdfIn PDF document text
- http://files.dns-for-me.org/uploads/1/3/1/8/131857758/vexix_visaxuge_zopawe.pdfIn PDF document text
- http://files.laurascreativeattic.com/uploads/1/3/2/7/132712080/wubud-devub-bimisud-nepoz.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/1/0433/8411/1267/files/merge_two_git_repositories.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3549/9418/files/yamaha_command_link_plus_installation_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7224/8222/files/depusexilapugusaviguseziz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9581/0455/files/litezigarugotomifi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/3651/7286/files/10768037470.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4841/8973/files/rupexifabamik.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3169/1421/files/suzafazobe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0463/1196/4829/files/ffx_blitzball_leveling_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9682/6273/files/fugibopa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9617/8849/files/lebemeguvevatitofetu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3834/9211/files/the_strain_trilogy.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4903/3627/files/bootstrap_template_creator_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7017/6928/files/argosy_property_annual_report_2018.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_off00004d74.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4D74 | 5352 bytes |
SHA-256: e094d55476f474ac61ffdda82801d7fc4d3e1b8006e86788af2a807e09e81b11 |
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font_01_sfnt_off00005f7c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F7C | 9932 bytes |
SHA-256: 2f1215dae65bdbbd71dc3f7ba4745fc001602ce4fab8acb6f4b7c9c6232a92f9 |
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