MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be part of a SEO link farm, aiming to attract users searching for specific content. The ML classifier strongly flagged this PDF as malicious. The primary attack vector is a phishing lure using a seemingly innocuous document to redirect users to a malicious site.
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=frozen+let+it+go+lyrics+pdf+download In PDF document text
- http://files.centerformarxisteducation.org/uploads/1/3/1/6/131636651/rebisodafakota-rokabidewi-bojolipizes.pdfIn PDF document text
- http://files.trinalang.com/uploads/1/3/0/7/130738806/6770477.pdfIn PDF document text
- http://files.anusaindigenous.com/uploads/1/3/0/8/130874474/6696737.pdfIn PDF document text
- http://files.zhishuaizhang.com/uploads/1/3/0/7/130775868/8b51431.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/dadimutixiwukigojubiw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1760/8090/files/psychrometric_chart_si_units_high_temperature.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3577/1558/files/burujovuwo.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/1/0433/2853/6734/files/fudujaxoluxupow.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6012/4061/files/58546301411.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0378/1015/files/lawavar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17844710077.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7831/0306/files/xisibazufotobowovafu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4691/1643/files/convert_zip_code_to_latitude_longitude.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0002/1667/files/46297922552.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6085/3920/files/78959144665.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4993/4229/files/jofozifibamasuxokilemex.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000086b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x86B6 | 5524 bytes |
SHA-256: f8195a27e871a39ccf0f5a29c58ddae5eae87936bea81f5087e56f3ea519fe18 |
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font_01_sfnt_off000099b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x99B7 | 15088 bytes |
SHA-256: d9f515d0bcab7b3661061b1a8079a895025b2a0faf64ef6a21dc9dfd94cbd0e4 |
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font_02_sfnt_off0000c960.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC960 | 16328 bytes |
SHA-256: 2bbab8e0ab70e0c99170dc5ad395c70f1ceb4d1c659183c267c07d9dd3c1dca0 |
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