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 suspicious or unknown domains, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=acidosis+metabolica+hipercloremica+pdf, which is also flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing.
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=acidosis+metabolica+hipercloremica+pdf In PDF document text
- http://kujorere.jeannetteross.com/uploads/1/3/1/3/131379730/510d00db6.pdfIn PDF document text
- http://files.summerconferenceportland.org/uploads/1/3/1/4/131406811/884349.pdfIn PDF document text
- http://losetatun.marketing4writers.net/uploads/1/3/1/0/131071157/gukurodenolor-vujegek.pdfIn PDF document text
- http://files.crazzynuts.com/uploads/1/3/1/4/131437823/1486497.pdfIn PDF document text
- http://files.cikopano.net/uploads/1/3/1/4/131453620/kasufo_sanegapipewam_rimupusamoximaw.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/1/0431/6859/6124/files/resobu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8954/2809/files/dadefarogu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3383/7219/files/61502927128.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8457/0019/files/bsc_physics_syllabus_bihar_university.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3253/4440/files/54909051063.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7223/3376/files/jozata.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1335/7214/files/pujafimebowaluzezedes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9143/5422/files/pazefurerixiwavosuvo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1858/3192/files/convert_kindle_to_mac.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5557/0341/files/pekazadekesanovipo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5992/9503/files/wegiwasunotazijesoxenifow.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_off00007271.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7271 | 2468 bytes |
SHA-256: cb0cd70f41c4d65ff892f5bea2f7043e60b644379869ff3e959bb1ec1c38e70b |
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font_01_sfnt_off00007d58.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7D58 | 5524 bytes |
SHA-256: c1ef574bd5d708c8e2517aa8a68328aa617ce2477ee15fa046970f5b8a902076 |
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font_02_sfnt_off00008fe8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8FE8 | 15564 bytes |
SHA-256: 78d34dca17f39ac96d6164c7615419cdf95ab2ccf1a3f930bbe8372b22e04c99 |
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