MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Sudoku puzzles pdf hard', suggesting a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a large number of external links, likely for SEO manipulation or to host further malicious content.
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.cc/wb?keyword=sudoku%20puzzles%20pdf%20hard In PDF document text
- http://files.versaillesfourthofjuly.com/uploads/1/3/1/4/131437158/4302449.pdfIn PDF document text
- http://files.birgfish.com/uploads/1/3/2/8/132815054/bovomaxibuxu.pdfIn PDF document text
- http://files.charitycora.org/uploads/1/3/1/4/131407980/xigitibarawasad.pdfIn PDF document text
- http://files.widisposal.com/uploads/1/3/1/4/131438642/kefunolonizowituf.pdfIn PDF document text
- http://files.lorettacrogersnovels.com/uploads/1/3/1/1/131163833/sarijezerevabe_riwujege_nupetis.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/1/0436/4071/7462/files/49227050784.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6044/5855/files/34023555858.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5780/6488/files/9698040007.pdfIn PDF document text
- https://jubujotilo.files.wordpress.com/2020/06/52773005894.pdfIn PDF document text
- https://demovajes.files.wordpress.com/2020/07/13362086586.pdfIn PDF document text
- https://lotopakaxil.files.wordpress.com/2020/07/suxorudomok.pdfIn PDF document text
- https://dabenuroz.files.wordpress.com/2020/07/32421567820.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99913566500.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5031/1579/files/38335398406.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9622/0572/files/jelupojiganun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8451/3429/files/1917214422.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5122/9089/files/govoloxodis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8620/8406/files/82078035320.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8759/3632/files/9883259672.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8077/7882/files/22856893718.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5827/5238/files/48894378721.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9154/2681/files/4988047420.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_off00006b37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B37 | 4996 bytes |
SHA-256: 443bf5a755d631eafdfb7f593d8d355c320e24c2142de79c78802d6c763e1bcf |
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font_01_sfnt_off00007c4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C4E | 10052 bytes |
SHA-256: 47ccdf29a21f070476f16cc4d6677cfa2d02cb7929eb10e5f27a6c9d13088ea7 |
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