MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains a significant number of external links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK', indicating a likely phishing or SEO spam campaign. The primary redirector URL is https://baarspo.ru/123?utm_term=aggregation+induced+emission+pdf, which is likely used to lure users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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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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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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://baarspo.ru/123?utm_term=aggregation+induced+emission+pdf PDF link annotation
- https://fitisasituwag.weebly.com/uploads/1/3/4/8/134846324/fumevolegewadojuges.pdfIn PDF document text
- https://dunawotota.weebly.com/uploads/1/3/1/4/131438316/kufomupimefawub_nexusudeju_vewinugawi_demexi.pdfIn PDF document text
- https://zopavuro.weebly.com/uploads/1/3/4/5/134584556/suferamese-zakawaxewegakaj.pdfIn PDF document text
- http://detonic-buy.website/american_truck_simulator_free_download_for_ios57bys.pdfIn PDF document text
- https://gipovaloko.weebly.com/uploads/1/3/4/4/134490423/3723400.pdfIn PDF document text
- http://khanapoorti.com/kozesivonebufazajg95r.pdfIn PDF document text
- https://kawavaturitavo.weebly.com/uploads/1/3/5/3/135321378/5977458.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/ronatiduzoxij/35692276639.pdfIn PDF document text
- https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_6c06848cc34e4acaa32d1233ccdaaaa2.pdf?index=trueIn PDF document text
- https://bed1e925-73f7-457c-87ff-53f226988024.filesusr.com/ugd/d4a8ce_2c5f49203a694b6aa3764689b99d2468.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/lolaritemukole/wikenotojog.pdfIn PDF document text
- https://s3.amazonaws.com/suximawo/95131045474.pdfIn PDF document text
- https://s3.amazonaws.com/davubewu/araba_park_etme_oyunu_indir_android.pdfIn PDF document text
- https://s3.amazonaws.com/zusevamasor/berafazozodu.pdfIn PDF document text
- https://s3.amazonaws.com/vobuturinivi/10545931247.pdfIn PDF document text
- https://s3.amazonaws.com/jeponowon/businessman_movie_telugu_hd.pdfIn PDF document text
- https://2065f6f1-29fb-48ac-a230-4f4ab2d4b746.filesusr.com/ugd/b62953_f52e55a1b902418cba52c1a2bcaf2f0d.pdf?index=trueIn PDF document text
- https://11fe2947-f393-4df3-905d-f9f3730e834a.filesusr.com/ugd/b1b16e_608b0b6e1e4c4a5d93cab60bd568ba02.pdf?index=trueIn PDF document text
- https://eaae50f7-3b1c-4f1b-9b3c-e2a48377569d.filesusr.com/ugd/b96e41_ed6f46a9fa8943399a0d0272a5788e84.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jemisajoda/dudanexusimoguto.pdfIn PDF document text
- https://s3.amazonaws.com/bejeseja/52976057696.pdfIn PDF document text
- https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_9a80c4dcb0684c43a219d5732dd30eed.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_off0000ed26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED26 | 5432 bytes |
SHA-256: 1e96a9197502c57d83e0912e49d2194685f2e1f37761f93e4e834cd9ce42fac9 |
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font_01_sfnt_off0000ff8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF8E | 11108 bytes |
SHA-256: 78c7bde0f9f93ddd28a786747159e9e2fc0041b93f06913f97ae0c65cad45395 |
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