MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to an 'Agilent 54621a oscilloscope manual'. The presence of embedded links and the ML classifier's high confidence indicate a malicious intent, likely to redirect users to a phishing site or download further malware. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.
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=agilent%2054621a%20oscilloscope%20manual In PDF document text
- http://files.navidbargrizan.com/uploads/1/3/1/6/131636988/zepugenonudu_zarizewipezaze.pdfIn PDF document text
- http://files.nathandmaki.com/uploads/1/3/0/8/130874009/jenunelabudaw_korezosuzedavew_loxuji.pdfIn PDF document text
- http://files.heritagefinancialnorth.com/uploads/1/3/1/4/131406701/8080993.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/1/0431/9903/7595/files/62882247471.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8947/7278/files/46298060496.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0381/3781/files/26892244273.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6086/1845/files/43911468855.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4447/0945/files/moleg.pdfIn PDF document text
- https://jarojadum.files.wordpress.com/2020/06/32702235303.pdfIn PDF document text
- https://joradudusi29210920.files.wordpress.com/2020/07/vuzejol.pdfIn PDF document text
- https://sifuvuviluz.files.wordpress.com/2020/06/61898528317.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4865/7318/files/40016785121.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9386/1279/files/20990908009.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7195/5351/files/penasaderonar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4447/0945/files/82380944577.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0485/3406/files/toputufajixonemux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3365/7498/files/48855300188.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4581/3413/files/baxotaguf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0351/8882/files/xupemujukujedideralax.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4292/0869/files/rabaxolidirulepobu.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_off00007826.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7826 | 5576 bytes |
SHA-256: dc579a3a20a1a63cff0271c2c0fa7bfbb7ca6534b8eb174b7b7e4705909f46a1 |
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font_01_sfnt_off00008b17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8B17 | 10244 bytes |
SHA-256: 8a0f1023858c43e03144dab65da90c8af0cb59d41f74249077ba390f5b7aa35c |
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