Malware Insights
The PDF contains multiple heuristics indicating malicious redirector links and phishing lures. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs, particularly 'https://crophysi.ru/strik?utm_term=types+of+literary+analysis+theories' and 'http://securitycheckingbrowservkcom.xyz/anabolic_steroids_effects_on_sports_performancesu7pj.pdf', are likely used to direct users to phishing or malware-hosting sites. Although no scripts were explicitly extracted, the PDF structure and link analysis point towards a phishing attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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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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Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LUREPDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
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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://crophysi.ru/strik?utm_term=types+of+literary+analysis+theories In PDF document text
- https://static.s123-cdn-static.com/uploads/4415936/normal_5ffff6f0235c4.pdfIn PDF document text
- https://cdn.sqhk.co/sadirurafixi/hhcIMgi/7566101198.pdfIn PDF document text
- https://cdn.sqhk.co/vovewotutal/bxDdig3/tozapabawixizuvolixer.pdfIn PDF document text
- https://cdn.sqhk.co/sadirorig/FAgfH0A/27007416161.pdfIn PDF document text
- https://cdn.sqhk.co/dojatejij/MrP3jcQ/77153824461.pdfIn PDF document text
- http://hookup154.site/cisco_anyconnect_vpn_windows_7hzgof.pdfIn PDF document text
- https://cdn.sqhk.co/tedalome/0jfBX4M/msr_pocket_rocket_2_kit_review.pdfIn PDF document text
- http://lakshmi-store.ru/artificer_crafting_guide6mhvd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4371258/normal_600055baa0205.pdfIn PDF document text
- http://medicalpracticementor.com/55066703989fiend.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4482206/normal_5ffbaf24e896c.pdfIn PDF document text
- http://securitycheckingbrowservkcom.xyz/anabolic_steroids_effects_on_sports_performancesu7pj.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481285/normal_5fff187e3d94d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/bomifabipi/9387145288.pdfIn PDF document text
- https://s3.amazonaws.com/zategafozasiru/best_online_android_course.pdfIn PDF document text
- https://s3.amazonaws.com/boxalewijim/former_australian_test_cricket_captains.pdfIn PDF document text
- https://s3.amazonaws.com/jazofi/chicago_format_book.pdfIn PDF document text
- https://s3.amazonaws.com/vososasoxumete/hadrians_wall_walk_self_guided.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_off00013062.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13062 | 5040 bytes |
SHA-256: c7182b7cd7ba7e399d0d2b0951b79f74a54708a7d80783ef63be1a10b960edc3 |
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font_01_sfnt_off00014188.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14188 | 10692 bytes |
SHA-256: cdadef716eb7fb84afa03938616e1a5f1cfe8b93fd0a056a2c6f6c02214164e4 |
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