MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged for containing a large number of external links, a technique often used in SEO link farms to manipulate search results or distribute malicious content. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=alpha+amylase+inhibition+assay+principle+pdf', is identified as a known malicious redirector. The presence of a visual download button further supports the lure aspect of this attack.
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/pify?keyword=alpha+amylase+inhibition+assay+principle+pdf In PDF document text
- http://files.breannpattyphotography.com/uploads/1/3/1/1/131164128/suzen-kewikobomon.pdfIn PDF document text
- http://files.momentsintheword.com/uploads/1/3/1/6/131607310/5769930.pdfIn PDF document text
- http://files.woodlandtechnology.org/uploads/1/3/1/4/131454383/67f20.pdfIn PDF document text
- http://files.vitalgateacupuncture.com/uploads/1/3/2/8/132814097/710a0763d546a.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/1/0430/3935/9127/files/vanubomovixogogeduvew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6001/6790/files/a_first_course_in_probability_9th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6699/0498/files/navenemufufirofosesite.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/0173/0456/files/20689454625.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0471/5427/files/xolopukulupiwugadisaxaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1917/2000/files/zuwuvatud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0190/3264/files/kitobasovejiranovuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7598/3778/files/sunelebifabedobodeseb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3265/8588/files/fovegugo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6558/0437/files/boss_gt_1000_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3437/0470/files/45705419463.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6761/3090/files/98051373939.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3877/7249/files/51924899638.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_off0000a049.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA049 | 5628 bytes |
SHA-256: 5d357c46a65d307fe320056f98c035dad2840a50fe07c28aa38bd9634b20a940 |
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font_01_sfnt_off0000b33f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB33F | 10544 bytes |
SHA-256: f9ea56e733b9f5594355bc31314d68fc4817cbcaa1a96b7c1d11819b175f8d03 |
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