MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. One such link points to 'ttraff.ru', which is flagged as a malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of the 'apollonius theorem proof pdf' keyword in the malicious URL suggests a lure to disguise the malicious intent. 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=apollonius+theorem+proof+pdf In PDF document text
- http://files.jacqulinesmith.com/uploads/1/3/1/8/131858592/saluvuxalaje.pdfIn PDF document text
- http://files.dirtydrinkdesigns.com/uploads/1/3/0/8/130813701/rekekeja.pdfIn PDF document text
- http://files.savannah-aerials.co.za/uploads/1/3/1/1/131164386/2946549.pdfIn PDF document text
- http://files.williamsolmedo.com/uploads/1/3/1/4/131438038/pupema-duzufi.pdfIn PDF document text
- http://files.amandaschupak.com/uploads/1/3/1/4/131407668/pureb-duxosoju-xowakijinutel-tepevuzore.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/1/0435/4713/2068/files/62309988696.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6886/6212/files/nerowo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4070/9527/files/juralaparagojajejivod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9091/1137/files/zizufabel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2278/6466/files/84961857415.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7140/6237/files/30663870002.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3517/1736/files/99511476810.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0127/3750/files/ruxekoluwasujiwelerise.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0812/2270/files/95032939930.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5657/0266/files/xuvawu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5570/1398/files/ganiwusu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7233/1675/files/xekikavupixalokag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7982/6589/files/89042468080.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_off00006d4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D4B | 4940 bytes |
SHA-256: 229282c42be7131f57c23e498abb6082fef1b749777da960f0a782739407e67f |
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font_01_sfnt_off00007de1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DE1 | 10168 bytes |
SHA-256: 0a1f97637f9e8e20bf85ef5f2432052c362ef3fdd90c8d72ee3c0a9f1e3a73f2 |
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font_02_sfnt_off0000a0ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA0CA | 16096 bytes |
SHA-256: 4d7a3a5f03612840c5c42154f561dda5bf4c39bad8940d4d4555f99834bacb02 |
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