MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. One critical heuristic identified it as a 'PDF_SEO_LINK_FARM' with 30 PDF links, suggesting it's part of a larger network. The embedded URLs and the nature of the heuristics point towards a phishing or malware distribution scheme, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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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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://jacksth.ru/wix?keyword=the+red+scare+in+the+united+states+worksheet+answers PDF link annotation
- http://maritimog.medianewsonline.com/easy_boogie_woogie_piano.pdfIn PDF document text
- https://polovetanofup.weebly.com/uploads/1/3/5/3/135330247/8f052052df.pdfIn PDF document text
- https://mevimozow.weebly.com/uploads/1/3/0/7/130776561/fewasuko.pdfIn PDF document text
- https://sixoribena.weebly.com/uploads/1/3/4/8/134848884/vuforigasok.pdfIn PDF document text
- https://gifiboluf.weebly.com/uploads/1/3/2/6/132681188/zezedowa.pdfIn PDF document text
- https://kalakibujupe.weebly.com/uploads/1/3/0/7/130740073/03369c6.pdfIn PDF document text
- http://kawafopi.mygamesonline.org/adn_polymerase.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444102/normal_5fd3482d63208.pdfIn PDF document text
- https://radixukawatezod.weebly.com/uploads/1/3/4/6/134645496/82d51b4.pdfIn PDF document text
- https://monemoret.weebly.com/uploads/1/3/4/6/134667898/judofap_fogar.pdfIn PDF document text
- https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/7bbf306.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386365/normal_6024655ca0645.pdfIn PDF document text
- http://gelivebun.22web.org/kobidalub.pdfIn PDF document text
- https://vanizubifimid.weebly.com/uploads/1/3/0/8/130874516/16dd0188f38540.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://javasuk.epizy.com/racing_car_game_please.pdfIn PDF document text
- https://60b161a2-b511-46bc-b48c-7ca4331f2db3.filesusr.com/ugd/34b71b_a5c2f4f97187435e98ad27d4805bc823.pdf?index=trueIn PDF document text
- http://wuxosalilujaza.atwebpages.com/xalinewevepilalivusa.pdfIn PDF document text
- https://52468903-0e2d-47c5-babb-61e1d305d291.filesusr.com/ugd/32777b_0e32b6ce073e46308d93de1457b2109b.pdf?index=trueIn PDF document text
- https://e1ca4115-fb55-43f9-84f1-eaf814f8c83f.filesusr.com/ugd/18122d_cc93348648b04aefbd60b2d364403c10.pdf?index=trueIn PDF document text
- http://nemebikox.epizy.com/bein_sports_tv_guide_rugby.pdfIn PDF document text
- https://4192d618-ecd7-4808-8485-efd4d6773ded.filesusr.com/ugd/17a5db_127419e9f1b243c3bf8ec46579eff6c5.pdf?index=trueIn PDF document text
- https://60b161a2-b511-46bc-b48c-7ca4331f2db3.filesusr.com/ugd/34b71b_9e95d4d83fcd4033b4847dcdd8bd3330.pdf?index=trueIn PDF document text
- http://fegoluvarelewum.myartsonline.com/human_genetics_textbook.pdfIn PDF document text
- http://vavilonogamet.epizy.com/xebuve.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_off0000e968.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE968 | 5100 bytes |
SHA-256: 166425ef84f7b141e4eba7b46020abce5abbb92e62c5aee40569b68bbb26d386 |
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font_01_sfnt_off0000facd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFACD | 10740 bytes |
SHA-256: 9545c88a495bf0f0f12a1684cec2008ccdbc59dca74d15227224c8e26d4420ae |
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