MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'nomenclature of organic compounds' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious verdict.
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=nomenclature+of+organic+compounds+with+functional+groups+pdf In PDF document text
- http://files.broadbandaccess.org/uploads/1/3/2/6/132682204/c6269dcea.pdfIn PDF document text
- http://files.theuniversalgospel.com/uploads/1/3/1/4/131407980/c80e695.pdfIn PDF document text
- http://files.kimklassybling.com/uploads/1/3/1/8/131857049/fab58f1841b9.pdfIn PDF document text
- http://files.stonesthrowtravel.com/uploads/1/3/0/8/130813526/segoroxolanevef.pdfIn PDF document text
- http://tagavo.aplusacademic.net/uploads/1/3/1/4/131408970/8420597.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/1/0431/1678/9927/files/nesutipidumapebefifot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1993/4628/files/types_of_occupational_health_hazards.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2631/7473/files/79575716306.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7108/6485/files/95201792443.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/vowalege.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1746/9080/files/fidadozeropuwokoduketux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6152/7206/files/journal_articles_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9930/6648/files/74894355718.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8553/7175/files/understanding_business_law_curtin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7003/7924/files/criminal_law_book_1_philippines.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8748/5342/files/athlean_x_abs_workout.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1184/8861/files/hernia_inguinalis_lateralis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3740/0999/files/5024806858.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9143/5422/files/55245716780.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_off00006c29.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C29 | 5632 bytes |
SHA-256: 7f5110e02df06b37f0aa871f4b474b34403afeb1d28ce25a14b90d8103069e3a |
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font_01_sfnt_off00007f3e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F3E | 9664 bytes |
SHA-256: 6fa540343243a247e992008f33eeffcb79c9d098d335f7d4320c06262c0574cf |
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