MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple critical heuristics for containing a malicious redirector link and a link farm. The embedded URL points to a redirector, and the document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create SEO spam or phishing documents. The presence of numerous external links, including one to a known malicious redirector, strongly suggests an attempt to lure users to malicious sites.
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=words%20to%20use%20instead%20of%20very%20pdf In PDF document text
- http://files.aleecheapitts.com/uploads/1/3/2/6/132695492/zelidiretanupiv_kejuluba.pdfIn PDF document text
- http://files.hccmansfield.com/uploads/1/3/1/3/131383630/bd20b8a.pdfIn PDF document text
- http://files.amelafrica.com/uploads/1/3/0/7/130775866/be0a5d40f6e.pdfIn PDF document text
- http://files.ogkquote.com/uploads/1/3/0/9/130969183/geragi-nazunosoros-nidesa-teziwibefofelir.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/1/0428/9835/8432/files/38935964995.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2391/7475/files/kenabuvire.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1685/5453/files/36649983447.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5916/7900/files/27957812692.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5969/9109/files/92959062016.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6592/3997/files/74201634892.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7920/5013/files/39224062563.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4479/8613/files/67176512744.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2208/8354/files/686402313.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2482/4995/files/tugetoginojoguxubuwa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9359/9132/files/fegegi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1194/6134/files/1909691062.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4678/0566/files/58058377749.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/9661/0718/files/37439392471.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_off000078ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78EA | 5060 bytes |
SHA-256: 48db3a0876c89f94cd949cbf03a47d0eb995490830c7155ce6aacbb97ceb5ac6 |
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font_01_sfnt_off00008a44.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A44 | 10092 bytes |
SHA-256: e4e94b52121ac8b9d708e9fdfdb1f847b1dd0620a24fe9ec9576c606508e22a9 |
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