MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by both ML classification and ClamAV, specifically flagged as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spamming operation. One of the primary URLs, 'https://nomylo.ru/pbw?utm_term=chapter+6+chemical+bonding+worksheet+answers', is likely part of this malicious infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://nomylo.ru/pbw?utm_term=chapter+6+chemical+bonding+worksheet+answers PDF link annotation
- https://static.s123-cdn-static.com/uploads/4422386/normal_5fcf7ceb5cec8.pdfIn PDF document text
- https://zibekasosux.weebly.com/uploads/1/3/4/0/134040395/vadot_zaforozoputan_lipixigix.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4376611/normal_60b4a2ffc7605.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4389801/normal_5ff1688a343cc.pdfIn PDF document text
- https://fuxamuwilemodo.weebly.com/uploads/1/3/4/4/134478429/siluxetadi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4491148/normal_604b5440bf23d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366639/normal_5ffc37cc7a77b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414332/normal_60bc911768f5f.pdfIn PDF document text
- https://tisemijosugimuv.weebly.com/uploads/1/3/1/0/131070246/vijuxeluke-velatawewurepuw.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4407729/normal_60b198e71193d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/35d2f1ae-17ca-4314-b6b2-a6d293b52a65/blackpink_forever_young_song_mp3_free_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4ae2e235-313b-48e7-b9fb-299b1c68e193/fanikafudoguduboj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/87ebb66e-8686-4849-b33a-05dd4adb97a1/hubsan_h501a_x4_air_pro_review.pdfIn PDF document text
- http://kufujibumufa.pbworks.com/w/file/fetch/144413937/how_to_write_a_30_day_notice_to_vacate_property.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/50c0c55c-b73b-4180-8c14-734bc8241e4a/37524269445.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83e75ea6-38dd-42e0-a874-10d1c8d1a081/what_does_eye_of_horus_tattoo_symbolize.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d758ed17-fec3-474b-9beb-3e24771bc740/bibogesegelaluwaganariwul.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f2c56b48-c495-4b86-8bf9-c230eac4ccf7/26452614324.pdfIn PDF document text
- http://kufujibumufa.pbworks.com/w/file/fetch/144671853/50596666042.pdfIn PDF document text
- http://sikovifif.pbworks.com/f/72460360781.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/25781a6f-acf9-4d3f-a3c3-475c2208157c/how_to_paint_a_tree_with_acrylics.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c75ac750-5f1d-4473-be05-2f68ff409272/38014957359.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/38f6dbd9-91ee-4dd3-8ce5-1f284b0d405b/mepexelon.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_off00011f95.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F95 | 5840 bytes |
SHA-256: 2e6279b74b150cd42fd6a0a30949f8b9a009422e6f9df487178818789693c442 |
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font_01_sfnt_off00013356.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13356 | 11684 bytes |
SHA-256: cb629539995a65ec04f7933340aa5c815086793592c8a001abb2eda264577e7b |
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