MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO manipulation tactic. One of the primary URLs, 'https://jottigo.ru/123?utm_term=direct+vs+inverse+proportion+graph', appears to be an SEO redirector used for phishing or malware distribution. No scripts were extracted, but the PDF structure and numerous external links strongly indicate a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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External URI info PDF_URIPDF contains an external URL action
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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://jottigo.ru/123?utm_term=direct+vs+inverse+proportion+graph PDF link annotation
- https://gumakamatiz.weebly.com/uploads/1/3/4/6/134600955/lakobilujaxuvolap.pdfIn PDF document text
- https://fobanuvoba.weebly.com/uploads/1/3/1/6/131637247/c5f11e.pdfIn PDF document text
- https://s3.amazonaws.com/bulolimepol/razube.pdfIn PDF document text
- https://cdn.sqhk.co/zegetaru/bahi9ge/13674293037.pdfIn PDF document text
- https://s3.amazonaws.com/liwafo/fuzapaj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423430/normal_5f9bcf961ba02.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495269/normal_6002715a970e2.pdfIn PDF document text
- https://s3.amazonaws.com/runuzitexokol/baliraxiwonixi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377114/normal_5fa6d3b971e8a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4461748/normal_5ff4380c0c895.pdfIn PDF document text
- https://s3.amazonaws.com/sojuravewi/59839541003.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481164/normal_5fd038ef09636.pdfIn PDF document text
- https://fifeguku.weebly.com/uploads/1/3/4/7/134733895/vaxigapowa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372373/normal_5f89dd423bece.pdfIn PDF document text
- https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/vuvatenajosefot.pdfIn PDF document text
- https://vugevosuza.weebly.com/uploads/1/3/5/3/135328642/jenogavepilor.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380214/normal_5f8f17c6cc279.pdfIn PDF document text
- https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/eab17.pdfIn PDF document text
- https://ranitezal.weebly.com/uploads/1/3/1/4/131438109/fopenale.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cd9f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD9F | 5224 bytes |
SHA-256: 82ff65a7334e140408ad5605a7303c440579281c522ae426f1e1b88b11dd69e1 |
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font_01_sfnt_off0000df71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF71 | 11612 bytes |
SHA-256: f0fc325d6127f65fb1333ce9a9bc00a5eb4c3e05042dc306786b4e0ed74f39ee |
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font_02_sfnt_off00010738.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10738 | 16192 bytes |
SHA-256: 2fbb528c30fae61c70ff4082faa5fece981988df10abad1a91cab371b780b9de |
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