MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing content. It employs a link farm strategy with SEO-optimized URLs and redirectors, such as https://pelibifir.ru/123?utm_term=book+of+assistance+arabic+pdf, to entice users to download further malicious content. The presence of external links and the overall structure suggest an attempt to deliver a second-stage payload, likely exploiting a PDF vulnerability.
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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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://pelibifir.ru/123?utm_term=book+of+assistance+arabic+pdf PDF link annotation
- http://org-fruit.space/116616763125so2h.pdfIn PDF document text
- http://zelopaqq.xyz/alexander_video_song19n3m.pdfIn PDF document text
- https://lanulizuxuja.weebly.com/uploads/1/3/4/6/134658029/5483911.pdfIn PDF document text
- http://kuvenumine.mygamesonline.org/what_is_an_engineering_notebook.pdfIn PDF document text
- http://zefutuwukeras.getenjoyment.net/exemple_de_lettre_de_demande_d_attestation_de_stage.pdfIn PDF document text
- https://federadedeladol.weebly.com/uploads/1/3/4/6/134626130/gisobes_turexi_vulul_baxodif.pdfIn PDF document text
- http://jonipifenukiz.mygamesonline.org/90947217451.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://disoluje.myartsonline.com/kepinewujafetoredizez.pdfIn PDF document text
- https://s3.amazonaws.com/vukujidor/game_concept_design_document_template.pdfIn PDF document text
- https://ac734925-007a-49fa-9a6b-2340142042ec.filesusr.com/ugd/ea78e0_200b5c34bd6d478d98f0491e83a505eb.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zarelusipofox/mini_blender_with_bottles_how_to_use.pdfIn PDF document text
- https://s3.amazonaws.com/xelimewat/character_education_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/voropa/steam_link_app_ios_beta.pdfIn PDF document text
- https://748e6e98-33e2-4bd1-95aa-01ea3505a154.filesusr.com/ugd/704f6c_d78472a5437c4f7e964f6fb41643950e.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xujitezu/33006850014.pdfIn PDF document text
- https://s3.amazonaws.com/kijelopazekune/ignition_poker_client.pdfIn PDF document text
- https://s3.amazonaws.com/tubukeganuji/lavefiruzaragutuvebifefe.pdfIn PDF document text
- https://e7c02ae7-ba66-49ef-8fe7-d4c265c54a1b.filesusr.com/ugd/bc5701_57dd2df9905c4a269dbca81b2180bbdf.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/mojivikapeti/sony_a2300_camera.pdfIn PDF document text
- https://s3.amazonaws.com/tinezedu/how_to_end_an_essay_conclusion.pdfIn PDF document text
- https://b760d8db-9746-4821-aa2b-94c9f806d328.filesusr.com/ugd/26ce45_c7f7941f46c04e05ac67a378085374c2.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_off0000d75a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD75A | 5368 bytes |
SHA-256: 0f3249281e46132b061c0d516f0138ebf151a98126c5d62a3fa596dc5a83c21b |
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font_01_sfnt_off0000e9ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9AD | 11120 bytes |
SHA-256: 3067922356aa2e4f3a8b664a2d49e58e1095cf8162cdeaf9950f7cddd7529961 |
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