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, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning attempt. One critical heuristic firing indicates a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'book pdf', reinforcing the lure. 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=housekeeping+marilynne+robinson+book+pdf In PDF document text
- http://files.goldenruleservices.org/uploads/1/3/1/1/131164394/lakobefobutanik.pdfIn PDF document text
- http://files.clarencecoastdbclub.com.au/uploads/1/3/1/3/131383398/91f63ac9ad2f.pdfIn PDF document text
- http://files.stpeterslittlebray.com/uploads/1/3/1/8/131856109/zabopeka.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://gazokuxosatu.files.wordpress.com/2020/07/wobijitikufagiwero.pdfIn PDF document text
- https://zomesepawewo.files.wordpress.com/2020/06/dopawidog.pdfIn PDF document text
- https://mokozub.files.wordpress.com/2020/07/83512523251.pdfIn PDF document text
- https://zukozadugon.files.wordpress.com/2020/07/9563324989.pdfIn PDF document text
- https://kabowaxebedo.files.wordpress.com/2020/06/41724764970.pdfIn PDF document text
- https://xiletemud.files.wordpress.com/2020/06/53763959603.pdfIn PDF document text
- https://sujaxogudat.files.wordpress.com/2020/06/61115542921.pdfIn PDF document text
- https://nazunuwu.files.wordpress.com/2020/07/42260340008.pdfIn PDF document text
- https://selijowo.files.wordpress.com/2020/06/53025050875.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5523/4710/files/banedajev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0313/4627/files/vujelalifuzaxexovixag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1652/7770/files/sivavafiwenadipo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fejatomamegebuwugibuvu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8360/3873/files/73090648929.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9940/5979/files/dubetalubusu.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_off000076b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76B0 | 5432 bytes |
SHA-256: d7536d0cf28019684f38a828cfb16317246e0a8a68cb3694a267b4484a7d3a29 |
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font_01_sfnt_off00008905.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8905 | 10112 bytes |
SHA-256: 54e6e5ccbc71d08f27b7f3acb0cf58d391f1e0830ad0542509c5b3d30fff0f36 |
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