MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create documents for SEO spam or phishing lures. The presence of a malicious redirector URL points to a likely phishing or scam attempt.
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.cc/wb?keyword=upstream%20b2%20pdf In PDF document text
- http://files.galenejackson.com/uploads/1/3/0/7/130740173/f4a1eb2320c405.pdfIn PDF document text
- http://files.detroitchamberorchestra.org/uploads/1/3/0/7/130775987/tisivegetud_magawesujir_jakisuzijimurur.pdfIn PDF document text
- http://files.mysoulsingsstudio.org/uploads/1/3/0/7/130739159/xovoda_jujanusegub_zuzelumitobaxop_nisov.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://pirotevo.files.wordpress.com/2020/06/gumolofida.pdfIn PDF document text
- https://fofukev.files.wordpress.com/2020/07/jasotewi.pdfIn PDF document text
- https://jimuzod.files.wordpress.com/2020/07/kamorasirigisapenuf.pdfIn PDF document text
- https://tufabasuzas.files.wordpress.com/2020/07/rukonovotutivupenifi.pdfIn PDF document text
- https://lusenexovaj.files.wordpress.com/2020/07/67473353490.pdfIn PDF document text
- https://kufexetironi.files.wordpress.com/2020/07/pobat.pdfIn PDF document text
- https://sogifefuve684083845.files.wordpress.com/2020/07/kudifo.pdfIn PDF document text
- https://nusovegot.files.wordpress.com/2020/06/kokomulusokito.pdfIn PDF document text
- https://janinulan.files.wordpress.com/2020/07/14794192713.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9072/2469/files/75901457952.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9496/6436/files/bololobaxuperekudil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wetitoditasenubekuxon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9454/0452/files/nuxazoxusipo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2790/6206/files/3270510114.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0471/5427/files/59201829471.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8297/3346/files/59210642714.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7058/7029/files/tufizedafonik.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_off000058b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58B3 | 4944 bytes |
SHA-256: f8647866393fc57a8c6c853d06b2016ab852910713ea53ab1a17332ac526a00a |
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font_01_sfnt_off00006973.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6973 | 8640 bytes |
SHA-256: a62c96111cc8f3efae73253cad55cd1b6ad5286b85a6a6cb5d6b9bf81ff50388 |
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