MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.ru/pify?keyword=factors+affecting+biotransformation+of+drugs+pdf', is identified as a known malicious redirector. The document body itself is heavily obfuscated and appears to be a lure, likely intended to trick users into clicking through the links. The presence of a link farm and a malicious redirector strongly suggests a phishing or malicious redirection attack pattern.
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=factors+affecting+biotransformation+of+drugs+pdf In PDF document text
- http://files.bolkovac.com/uploads/1/3/2/7/132740805/21f213.pdfIn PDF document text
- http://zidum.buckinjdesigns.com/uploads/1/3/1/3/131383791/samezuxadugepe_popikisumub_wiluvejak_xifeloti.pdfIn PDF document text
- http://files.rossdillon.com/uploads/1/3/0/7/130739510/2055053.pdfIn PDF document text
- http://files.eponafarmkeswick.com/uploads/1/3/0/9/130969772/kobumeluri.pdfIn PDF document text
- http://files.watersafetyandsurvival.org/uploads/1/3/0/7/130776077/xifuwovamux_bozajasisixoz_fomenekivam.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/1/0430/6203/4589/files/algebra_2_problems_and_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9937/3214/files/punenef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7147/9713/files/67350756264.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rakapadanixip.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6653/0721/files/mogunegewexadonuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2190/0696/files/cognitive_bias_codex_poster.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3944/0543/files/wogadipimavirejekujujaxo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5697/2455/files/ganovukutuxanuvilujotewes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakawefefaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5837/3542/files/73148349051.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5965/9420/files/muwat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3123/2674/files/17404049339.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8179/3698/files/46070057517.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7877/0076/files/50680556141.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/2813/1485/files/estados_financieros_contabilidad.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_off0000a692.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA692 | 5540 bytes |
SHA-256: 92a290374ea3b93f8d18a237dc2b75d89832125db9724fa1799794d7b51dc03f |
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font_01_sfnt_off0000b94b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB94B | 10520 bytes |
SHA-256: 47bce8da81ad4ed9a168c2d5875b5e2b3ede59464d32d78e5fba1a8397039483 |
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