MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body, though obfuscated, contains a URL that appears to be a lure for downloading content related to "Liver cirrhosis notes pdf". The ML classifier strongly indicates maliciousness, and the presence of a redirector link suggests an attempt to lead the user to a malicious site, likely for phishing or malware distribution.
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/wb?keyword=liver%20cirrhosis%20notes%20pdf In PDF document text
- http://mutixidol.thoughtprovokingmomentsblog.com/uploads/1/3/1/3/131383839/borane-koxefujubu.pdfIn PDF document text
- http://bezoxoteb.thenostalgicmouse.com/uploads/1/3/0/8/130814328/79efb877073.pdfIn PDF document text
- http://files.hollykherndon.com/uploads/1/3/2/6/132683228/nidekobunezum_fawewobazoxi.pdfIn PDF document text
- http://files.thearborsatparsippany.com/uploads/1/3/2/6/132695405/muwawakotojuzu.pdfIn PDF document text
- http://tozoxuj.englishinisrael.com/uploads/1/3/0/7/130739344/0e4c67.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/1/0435/4749/2506/files/88810592549.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1335/7214/files/34685422022.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8351/3494/files/tutiriwopavexifo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8937/1040/files/simple_and_clean_lyrics_english.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4322/5751/files/revipifurunuxovuxupavu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2571/0756/files/ripozezumezibobo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9018/2304/files/account_receivable_process.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32808714247.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8870/6717/files/adverb_clauses_exercises.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8249/7696/files/pupitezezepanudikowi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0731/9974/files/relutunefoxumuno.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8999/3636/files/lifuzemuxabakawuvagibabu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5627/5360/files/71230495509.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_off00006527.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6527 | 5004 bytes |
SHA-256: 0be7cd8ca6f927b89b510a25e94a8fc52234728d23f7338e91946a977011cc37 |
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font_01_sfnt_off0000762a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x762A | 10000 bytes |
SHA-256: af27907705c772fbda36d014824f9d04063affa80d01a9e5e187b4652486f136 |
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