MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many pointing to S3 buckets with seemingly benign filenames, but one critical link redirects to a known malicious domain. This indicates a tactic to obscure malicious intent behind a large number of links, likely for SEO manipulation or to hide the true destination. The ML classifier and ClamAV detection strongly support a malicious classification, with the primary IOC being the redirector URL.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://crophysi.ru/strik?utm_term=how+to+clean+coleman+dual+fuel+stove In PDF document text
- https://nazisedisan.weebly.com/uploads/1/3/1/8/131871674/7866105.pdfIn PDF document text
- https://xopigitit.weebly.com/uploads/1/3/4/3/134339451/3717711.pdfIn PDF document text
- http://xojuxelase.medianewsonline.com/77031640378.pdfIn PDF document text
- https://wevumofanefaso.weebly.com/uploads/1/3/5/9/135964816/begekaw-zikabufavune-neridasuwodusu.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/baritexovopa/87574784868.pdfIn PDF document text
- https://s3.amazonaws.com/gagagakigibapo/mobegexanapevigame.pdfIn PDF document text
- https://s3.amazonaws.com/jesidofefe/supojanaginonu.pdfIn PDF document text
- https://s3.amazonaws.com/zagubip/cabin_crew_interview_tips_and_answers.pdfIn PDF document text
- https://s3.amazonaws.com/lebejos/zuzubibukidafebosenavuzem.pdfIn PDF document text
- http://kikanelomer.onlinewebshop.net/xuralipoteveluxonuwaga.pdfIn PDF document text
- https://s3.amazonaws.com/bisazabe/ritek.pdfIn PDF document text
- https://s3.amazonaws.com/pogolo/research_about_school_uniform.pdfIn PDF document text
- https://s3.amazonaws.com/penale/how_to_watch_multiple_twitch_streams_on_mobile.pdfIn PDF document text
- https://s3.amazonaws.com/bejeseja/36287848099.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/be89674c-7bba-4e59-8e33-eea56ed51d40/list_starbucks_menu_philippines_frappuccino.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2d2e5483-dca9-45b6-afd3-41a91460fda6/dakotabasiwakuxuki.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e1135237-3ac9-4aef-bdb4-8f050ac22ae6/nijonifeguwudadenu.pdfIn PDF document text
- https://s3.amazonaws.com/pizivurapab/baptismal_class_manual_sda.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4a56ba70-8c81-465a-8d38-aff7d475e797/gutikefigeboxaraxirokosep.pdfIn PDF document text
- https://s3.amazonaws.com/zuses/xaturizuxen.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_off0000ee08.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE08 | 5184 bytes |
SHA-256: 0e69129654f3d356072f8d498c3347efb1b3898b73cf348f2a6117b45cc8659f |
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font_01_sfnt_off0000ffba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFBA | 10960 bytes |
SHA-256: 46e0353b00a4706633301798a0e6144cd9f03099e69caa3bd4cdb76c3f82e15b |
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