MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Effective communication skills pdf great courses' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly supports the malicious nature of this PDF.
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/pify?keyword=effective+communication+skills+pdf+great+courses In PDF document text
- http://files.masterclassbudapest.com/uploads/1/3/1/3/131398259/delirobufukoxis-rudovizikelex-nulomigeforudid-kulapenefeba.pdfIn PDF document text
- http://files.sdsimages.com/uploads/1/3/2/8/132815752/1413500.pdfIn PDF document text
- http://files.akbeadsociety.org/uploads/1/3/2/6/132696104/kafiginujapokawez.pdfIn PDF document text
- http://files.tymprojects.site/uploads/1/3/2/8/132815206/jibomatodedake.pdfIn PDF document text
- http://tiwim.biglittlethingsfoundation.org/uploads/1/3/1/6/131607131/tamizi_jemugizitoruf.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/1/0429/4639/6326/files/27879072464.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2656/9633/files/sekiro_mask_fragment.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3291/9720/files/asrock_z370_pro4_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8746/2551/files/85235707437.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1282/2939/files/7912569174.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3933/2251/files/adp_self_service_portal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8548/6485/files/33182591038.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5942/0063/files/jevugesisikoguxewewefozaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4553/5400/files/mathematical_biology_textbook.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6734/1981/files/28170333404.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0182/2875/files/kibopovidokujulumoja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8153/9489/files/19114919119.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.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_off0000679a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x679A | 5556 bytes |
SHA-256: a76bb3d740d6f22457c927c388994621cf59c27c0e4c58f779f06a7dbbc60f98 |
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font_01_sfnt_off00007a7e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A7E | 10180 bytes |
SHA-256: 64c7014c3e962edf0aa012563b1d5d44e8098c5db8125bce992a93d06d946d00 |
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