MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many pointing to external PDF files, which is indicative of a link farm or SEO spamming technique. One critical heuristic identified a link to a known malicious redirector, `https://ttraff.ru/pify?keyword=exponents+with+negative+bases+worksheet+pdf`. The document body, though partially obfuscated, also contains this URL, suggesting the primary intent is to drive traffic to malicious infrastructure. No scripts were extracted from this sample.
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=exponents+with+negative+bases+worksheet+pdf In PDF document text
- http://files.shophempsley.com/uploads/1/3/2/6/132681443/bagatezumokapa.pdfIn PDF document text
- http://files.shopburpee.org/uploads/1/3/1/4/131438829/5cde1b18.pdfIn PDF document text
- http://files.artbymadelinesmith.com/uploads/1/3/1/4/131454065/tokoxegududuz-nenetofajumena.pdfIn PDF document text
- http://files.threeyogachicks.com/uploads/1/3/2/6/132681513/4261354.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/1/0438/3670/2870/files/how_to_merge_files_mac.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7833/6165/files/rejazezisetabaxaz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1617/5263/files/19741688395.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2696/3865/files/49584918510.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1143/2857/files/11484666874.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1705/2053/files/81686108603.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2417/7557/files/donotafupuzamofumob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2134/2619/files/pazanevip.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2897/1681/files/senabepudifogekagavijekuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5167/9893/files/kosufesugajajilemud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2823/3885/files/gitemoduwarudasalel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5806/8633/files/vidoxenosifivovisamuk.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000062b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x62B5 | 5652 bytes |
SHA-256: 5f5a409f7c219285524a6a165b8633f1a63580e0ffaadb7dc41c48a4428dac8a |
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font_01_sfnt_off00007607.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7607 | 10660 bytes |
SHA-256: c437cbec7c0c79704966b2701a81ce9befa6b99aec71bf3a7a091c15a9813a97 |
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font_02_sfnt_off00009a7e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9A7E | 16164 bytes |
SHA-256: 735145b4449eb7055ff6b4d40d3aa45f563fca0706c7c6ce5da58054ef6f4a5f |
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