MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, with one critical heuristic firing indicating a malicious redirector. Another critical heuristic identifies this as a PDF SEO link farm, suggesting the primary purpose is to drive traffic to external sites. The embedded URLs, such as https://ttraff.ru/wb?keyword=double%20number%20worksheets%20ks1, are likely part of this malicious infrastructure.
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=double%20number%20worksheets%20ks1 In PDF document text
- http://files.blackbullfrosterley.com/uploads/1/3/1/3/131398358/5828953.pdfIn PDF document text
- http://files.misswcourtroom.com/uploads/1/3/1/3/131383823/lekop-xugoligazi-fuzulabap-lupuwep.pdfIn PDF document text
- http://files.hutchbooks.com/uploads/1/3/1/4/131406841/cb37b3.pdfIn PDF document text
- http://files.moongoddessemporium.com/uploads/1/3/1/4/131438423/jibuti.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://kogovabazoro.files.wordpress.com/2020/07/vusid.pdfIn PDF document text
- https://jarawagodas.files.wordpress.com/2020/07/jajolure.pdfIn PDF document text
- https://waxizonuv.files.wordpress.com/2020/06/25064646353.pdfIn PDF document text
- https://delepozafejo.files.wordpress.com/2020/06/30222426106.pdfIn PDF document text
- https://mumovesutaj.files.wordpress.com/2020/06/kipufibafigazen.pdfIn PDF document text
- https://wazuxewimido.files.wordpress.com/2020/07/17293228475.pdfIn PDF document text
- https://tefuradimuva.files.wordpress.com/2020/07/34766158937.pdfIn PDF document text
- https://josotanemi.files.wordpress.com/2020/07/37791625172.pdfIn PDF document text
- https://bivuwid.files.wordpress.com/2020/06/93036722497.pdfIn PDF document text
- https://xeburov945496308.files.wordpress.com/2020/07/soledodegenexopozijun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7526/3909/files/pevesokirokameken.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2010/7424/files/66780638973.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9950/5311/files/52653138640.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4398/7361/files/zakiremeso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41697505155.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3877/7249/files/wuvawazibilivopo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9862/8501/files/45023380193.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_off00005ee7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EE7 | 4896 bytes |
SHA-256: d4d9d1b850db8d959eca3acd3e6beabe0bc34ff5ce55048dde6013c7a9b2b956 |
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font_01_sfnt_off00006f78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F78 | 9760 bytes |
SHA-256: a7d972217190823da4bc509f96ce37cd2210cad56b874933409451c58c4e99ab |
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