MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, suggests a lure related to 'chromatography principles and instrumentation pdf', likely a pretext for a phishing or malware distribution scheme. The ML classifier strongly indicates maliciousness, and the heuristic firings confirm the presence of malicious redirector links and a link farm designed for SEO manipulation.
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=chromatography%20principles%20and%20instrumentation%20pdf In PDF document text
- http://files.barrons-conferences.com/uploads/1/3/1/4/131409170/3066792.pdfIn PDF document text
- http://files.meyrickestates.net/uploads/1/3/0/7/130776388/xojoti_runeriwodowesi.pdfIn PDF document text
- http://files.reikifortheplanet.com/uploads/1/3/2/3/132302815/5645773.pdfIn PDF document text
- http://files.saugusxc.net/uploads/1/3/2/6/132695543/goloxiv-mired-zakobegoselaten.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/1/0430/1553/6793/files/59559930803.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4576/3744/files/1169250602.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5747/0872/files/zewufedeno.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9386/1279/files/51237303533.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0007/0307/files/86919084748.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jedajuzosefowi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8778/1276/files/keletijirepebikisitivud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0453/4692/files/malofesuze.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0392/7973/files/14014032717.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8907/6117/files/10379968915.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7027/5236/files/rotetaxinitazagelibese.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_off000071db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71DB | 1696 bytes |
SHA-256: 9a98723dae936e7c7c8d502cfbcf27bf9f93cff28ba6a06675a6a95244fbc4de |
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font_01_sfnt_off00007a05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A05 | 5576 bytes |
SHA-256: 0fd5b756488457a4dcf45ca93be6ac56c7be12a7247b50b2305688d9996c3fc7 |
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font_02_sfnt_off00008cda.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8CDA | 10028 bytes |
SHA-256: d4769a4b96416f02fafa670c95d88bad5bb605ad07593d0ea613e08f963cac98 |
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