MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. One such link, 'https://ttraff.ru/wb?keyword=mathe%20geometrie%20klasse%204%20pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain metadata related to 'wkhtmltopdf' and a date, suggesting it was programmatically generated. The presence of a link farm indicates an attempt to manipulate search engine results or distribute malicious links broadly.
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=mathe%20geometrie%20klasse%204%20pdf In PDF document text
- http://files.vetiverandsage.com/uploads/1/3/1/3/131398268/zafovukefidax-kilubefetisijat-zasadono.pdfIn PDF document text
- http://files.bounce4batten.com/uploads/1/3/0/8/130815137/7621e77479fa2.pdfIn PDF document text
- http://files.sawfishonline.com/uploads/1/3/1/4/131406391/deginut.pdfIn PDF document text
- http://files.intensitycheeranddance.com/uploads/1/3/0/7/130739505/xinav.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/1/0428/2961/1171/files/rejaridutokofivetosopug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2950/3908/files/jomarosorekupap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7140/6237/files/limis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3181/2504/files/4642750390.pdfIn PDF document text
- https://dekabivegu.files.wordpress.com/2020/06/71215762780.pdfIn PDF document text
- https://jekevak.files.wordpress.com/2020/07/96474815664.pdfIn PDF document text
- https://tudenobinedu359522656.files.wordpress.com/2020/07/52059039200.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5069/5830/files/13154011230.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9502/4023/files/91385854696.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9931/6639/files/48838610577.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7217/5784/files/fujuroboxobozujake.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6179/6248/files/48209538589.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1010/4228/files/xukal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9732/5732/files/desuratiruzawulo.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_off000071d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71D3 | 5292 bytes |
SHA-256: e8389d3e8376d4a878453a2110e52128f6ad4adbde26d2a0f2dab2ff8216a1f1 |
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font_01_sfnt_off000083e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x83E4 | 10628 bytes |
SHA-256: 7f22acbfb3710586f0fa48f7b4e17859fe529ecc017cae93437145cafd2430da |
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