MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious due to its inclusion of a large number of external links, characteristic of a link farm. One of these links points to a known malicious redirector. The document body contains metadata indicating it was generated by wkhtmltopdf, suggesting it might be part of a larger automated content generation process for SEO spam or phishing.
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=pdf+catecismo+primera+comunion In PDF document text
- http://files.thujar.ca/uploads/1/3/1/3/131384771/308588.pdfIn PDF document text
- http://files.jojoscelebrationcakes.com/uploads/1/3/0/9/130969731/fatoda.pdfIn PDF document text
- http://files.plainbird.org/uploads/1/3/1/3/131380158/pufiw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://pimudan.files.wordpress.com/2020/06/92694278393.pdfIn PDF document text
- https://kedibomomelu.files.wordpress.com/2020/06/xegunidilowunaxam.pdfIn PDF document text
- https://natazilanufa.files.wordpress.com/2020/07/gazuguzetek.pdfIn PDF document text
- https://pirusuzu.files.wordpress.com/2020/06/92160202665.pdfIn PDF document text
- https://kiwepolojaka925135824.files.wordpress.com/2020/07/pifiroleleveporetigodof.pdfIn PDF document text
- https://jepovamofeg.files.wordpress.com/2020/06/54565283755.pdfIn PDF document text
- https://vogupiboje.files.wordpress.com/2020/06/zuvokidad.pdfIn PDF document text
- https://fokowogireg727408738.files.wordpress.com/2020/06/mirutofogixer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2065/6545/files/tibidududagija.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7222/5442/files/loditerelereguliba.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4077/6093/files/fazabivopudidoruwite.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7245/3797/files/fegaxovumemezoleme.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1979/6643/files/kejovaneresezabozobopi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4017/8333/files/62212455145.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2381/8139/files/33996223951.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0582/1599/files/16156624486.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000767a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x767A | 4448 bytes |
SHA-256: 275d721429a4e913bd481889c23e68e01030febaf49d1c03475cc624a3139895 |
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font_01_sfnt_off00008616.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8616 | 5152 bytes |
SHA-256: 0d9095c9fad88f6bc93f66ec262e3f200f198dfb713bbd749ad1beebfa96b97d |
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font_02_sfnt_off0000977b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x977B | 10100 bytes |
SHA-256: 7b363d97c225c3f00bc609a016f0f7070fe4b2ab9d81587c8d2a08ca4917feee |
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