MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=inflammation+atherosclerosis+and+coronary+artery+disease+pdf`. The document body itself is heavily obfuscated but contains references to this URL and numerous other Shopify-hosted PDF files, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The primary intent appears to be redirecting users to potentially harmful content.
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=inflammation+atherosclerosis+and+coronary+artery+disease+pdf In PDF document text
- http://nodix.firstfirebirds433.com/uploads/1/3/0/7/130740025/jumupivimewofatet.pdfIn PDF document text
- http://files.grewbuilding.com/uploads/1/3/0/8/130874204/6904644.pdfIn PDF document text
- http://files.ckc3.org/uploads/1/3/1/4/131452977/nisataxo-semulatusijoter.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/1/0431/1613/4562/files/8979582020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1581/2766/files/asperges_me_domine.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6246/8516/files/sijoxoroliwavotepebelab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5621/7750/files/68012058718.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1748/7011/files/xanubolane.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7334/6463/files/fundamentals_of_thermodynamics_6th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9587/5989/files/samsad_english_to_bengali_dictionary_file.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0070/9791/files/zawupa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0671/3253/files/kudawasujofuxilezosob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4296/3613/files/pejiragezesomamonuburiv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5425/9610/files/ken_fisher_net_worth.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1059/6765/files/1074188999.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7940/1632/files/35594191113.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_off000083fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x83FE | 5220 bytes |
SHA-256: a149a27eb4183121705203b474153cfa2f4f53f68dc7e24df0d39349198859d2 |
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font_01_sfnt_off00009587.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9587 | 10796 bytes |
SHA-256: 5290d4e598478453d5981381a96992e6eedabd975e5dbe088d4b79f5dbb2c5af |
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font_02_sfnt_off0000b991.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB991 | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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