MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=adjective%20worksheets%20pdf%20middle%20school'. This suggests the document is part of a link farm designed to distribute malicious content or phish for information. No scripts were extracted from this sample.
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=adjective%20worksheets%20pdf%20middle%20school In PDF document text
- http://files.theworldofmcewan.com/uploads/1/3/0/7/130738814/gibaja_tawix_wododibura_musimetal.pdfIn PDF document text
- http://files.merarifernandez.com/uploads/1/3/1/4/131407165/6839308.pdfIn PDF document text
- http://files.midwestnettingsolutions.com/uploads/1/3/1/4/131408546/bazoselikidesoxirino.pdfIn PDF document text
- http://files.paiboon.biz/uploads/1/3/1/4/131406762/1208977.pdfIn PDF document text
- http://files.kmphotographyma.com/uploads/1/3/1/4/131407165/1126974.pdfIn PDF document text
- http://files.perashlaw.com/uploads/1/3/0/7/130776567/3934b571d.pdfIn PDF document text
- http://files.msumun.org/uploads/1/3/1/4/131409244/5567197.pdfIn PDF document text
- http://files.openmul.org/uploads/1/3/1/4/131454109/eaa307.pdfIn PDF document text
- http://files.sustainabilityiscool.com/uploads/1/3/0/7/130739891/a856abfa.pdfIn PDF document text
- http://files.bizkidz.us/uploads/1/3/2/6/132681409/nojuwekuwite.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://vukomalej.files.wordpress.com/2020/07/bupumuwixixobize.pdfIn PDF document text
- https://vupujejuwozo.files.wordpress.com/2020/07/44447794135.pdfIn PDF document text
- https://nomakegune.files.wordpress.com/2020/06/vodugujetilujenem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/matam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.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_off00008741.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8741 | 5148 bytes |
SHA-256: 20e9ed3e056078fe11699ca9b16179b4c6299f9e7d805eebcb97acfbc910bb42 |
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font_01_sfnt_off000098db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x98DB | 11676 bytes |
SHA-256: 15983787f96cd5de7fd4440f66585b0f1b91625b145b5c7a756efe2bd37c4315 |
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