MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF file contains multiple links to redirector infrastructure, including a critical finding of a link to dafemum.ru. The document body, though heavily obfuscated, suggests a lure related to 'verbs in english grammar pdf'. The presence of numerous external PDF links and the ML classifier's high confidence score indicate a phishing or malicious redirection attempt. The file is detected by ClamAV as Pdf.Phishing.Trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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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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://dafemum.ru/wix?keyword=verbs+in+english+grammar+pdf In PDF document text
- https://static.s123-cdn-static.com/uploads/4485015/normal_6007401d342ca.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4492281/normal_5ffc28723f1b2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367635/normal_605b37ec1a9e1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4407057/normal_5fc7d5c65c89c.pdfIn PDF document text
- https://cdn.sqhk.co/ritapabinap/FAhihvu/50435657059.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382790/normal_6048f05f26ce1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379487/normal_603e3f2e1a888.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481056/normal_6036f48945731.pdfIn PDF document text
- http://xazupadapafow.mypressonline.com/5784821797.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4421969/normal_6005746abcf40.pdfIn PDF document text
- https://cdn.sqhk.co/suxujaba/jiifhce/mcps_portal_login.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4392237/normal_5ffa708d05ff7.pdfIn PDF document text
- https://cdn.sqhk.co/febenanedibu/jgrRMdB/nunegulufanepumomedodoxur.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4444369/normal_5ffb3eb42d851.pdfIn PDF document text
- https://cdn.sqhk.co/tumowara/oNFibhi/mobile_radar_app_for_android.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466408/normal_6048d41281c1a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472766/normal_602dc71a17a43.pdfIn PDF document text
- http://zokugorevat.mywebcommunity.org/86975158544.pdfIn PDF document text
- https://cdn.sqhk.co/ponajadu/heshihb/audible_mac_app.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://vimixof.onlinewebshop.net/what_is_a_coastal_temperate_rainforest.pdfIn PDF document text
- https://2eda13a9-9e0f-47dd-bbfa-a9a5028a3314.filesusr.com/ugd/61c57f_b26980b29a4d4abc9b424fad96ae2e55.pdf?index=trueIn PDF document text
- http://gozenabuzixi.onlinewebshop.net/stihl_weed_eater_string_.105.pdfIn PDF document text
- https://b57d2ba2-989e-4187-ab2f-e88ff5a458ca.filesusr.com/ugd/70c1f8_7715fa01e9e7440c8a7d68e4afc4251c.pdf?index=trueIn 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_off0000f746.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF746 | 5560 bytes |
SHA-256: 64b7656a64c8e4bf93ab35a43592a04ea82c1da6254f010878d10f14a6bc1e17 |
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font_01_sfnt_off000109ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109FF | 10668 bytes |
SHA-256: 9fd2d59d69834d9773e39c7d2df7419c90e3444e35dfcfac312a86eb7207f51b |
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