MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a prominent link to a redirector URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This URL is presented within the document body, disguised as a medical textbook title. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or distribution network. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link.
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=case+files+emergency+medicine+5th+edition+pdf In PDF document text
- http://files.kaysit.com/uploads/1/3/0/8/130874338/nosule.pdfIn PDF document text
- http://files.queeninandblingin.com/uploads/1/3/0/7/130775109/9233597.pdfIn PDF document text
- http://files.surfacesolutionsnmore.com/uploads/1/3/1/4/131453539/dixidigetama.pdfIn PDF document text
- http://zofun.kumquatcoffee.com/uploads/1/3/0/8/130814328/5231571.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0428/9835/8432/files/4077026649.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0204/3288/files/catena_aurea.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1824/8601/files/brachiaria_brizantha_mg4.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8414/3010/files/80189912916.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5007/4269/files/belagajaboxisesowowawisu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8634/7414/files/apprendre_japonais_mp3_nhk_world.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80463449019.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6470/4662/files/44117817545.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1774/6070/files/tigulelumilewuve.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8113/0394/files/92723684381.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0461/7119/files/97187482088.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0052/8033/files/fatoxaniriwu.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000066c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66C1 | 1660 bytes |
SHA-256: cc90c79c64b3a01d8aa8530b688c572e363a30a42859d4255ec20da47c7bec48 |
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font_01_sfnt_off00006f04.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F04 | 5700 bytes |
SHA-256: 57dd6be851db57ef6bc0c0747080a8bc745753951e3f1fa2c1b23a05af1775a7 |
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font_02_sfnt_off0000823d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x823D | 1800 bytes |
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e |
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font_03_sfnt_off00008acb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8ACB | 10020 bytes |
SHA-256: 2e7919bcf06ca30d8b783347f6518c62a7eca5c60b2133c5d096fc5849c8fd72 |
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