MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many pointing to SEO-optimized PDF files, indicating a link farm designed to funnel traffic. One prominent link, 'https://pelibifir.ru/strik?utm_term=comcast+xfinity+phone+number', is identified as a redirector for a phishing lure, likely related to Comcast/Xfinity services. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 7
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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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
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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://pelibifir.ru/strik?utm_term=comcast+xfinity+phone+number PDF link annotation
- https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/powemizimapaz-wowinuku-ruvidixe.pdfIn PDF document text
- https://getazepamotiga.weebly.com/uploads/1/3/4/3/134352900/nubovabi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4488574/normal_5fddd9e80a7a8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369793/normal_5fe2de146f4e4.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/7694536b-c393-4593-9dd4-271abdd7d069/used_aermotor_windmill_for_sale.pdfIn PDF document text
- https://s3.amazonaws.com/xajowu/daxevisojinakawu.pdfIn PDF document text
- https://s3.amazonaws.com/jeromopelurab/molexijivimabopabuxofare.pdfIn PDF document text
- https://s3.amazonaws.com/fezenur/nivuzozubexovok.pdfIn PDF document text
- https://s3.amazonaws.com/tabobujimo/sogotine.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e63b879a-bcbb-4fda-9d61-898d4e398835/xopesowe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d4173ea9-70bd-4c24-8521-c31e1a2b70df/gigulovasoj.pdfIn PDF document text
- https://s3.amazonaws.com/bokexizometun/37781627066.pdfIn PDF document text
- https://s3.amazonaws.com/tawovojo/anemia_management_in_ckd_guidelines.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/89f96a80-31c9-45c7-82a7-5853aa8a286c/57004821985.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1e33ca6b-8a03-4a0b-a76d-e08606cdc884/how_to_create_website_using_wordpress.pdfIn PDF document text
- https://s3.amazonaws.com/pirofopafu/actor_vijay_sethupathi_images.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/49522233-83ae-46fa-83da-cf01ce96821b/harry_potter_video_game_2020_ps4.pdfIn PDF document text
- https://s3.amazonaws.com/nezanurugega/58576196070.pdfIn PDF document text
- https://s3.amazonaws.com/lulelepese/16698166894.pdfIn PDF document text
- https://s3.amazonaws.com/petubapizo/do_nissan_frontiers_have_transmission_problems.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010a75.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A75 | 5440 bytes |
SHA-256: ec1b511f8278ad85ccd2015b1be37afb98c937a871d4f6e4193900caf85a88b8 |
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font_01_sfnt_off00011cc9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CC9 | 11720 bytes |
SHA-256: 5dc690e588de1c5d7520f12be4bfd04c06d90f6f1a124c43d94102ddd5911d75 |
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font_02_sfnt_off000144af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x144AF | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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