MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, many of which point to SEO-optimized PDF hosting sites, a common tactic for distributing malicious content. One prominent URL, 'https://pelibifir.ru/strik?utm_term=volume+of+a+cuboid+is+12+cm3', is identified as a redirector, suggesting it's part of a phishing or malware distribution chain. The ClamAV detection and ML classifier further confirm its malicious nature, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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/strik?utm_term=volume+of+a+cuboid+is+12+cm3 PDF link annotation
- https://tesujirigagorin.weebly.com/uploads/1/3/4/8/134869290/5972923.pdfIn PDF document text
- http://idealica-italiaufficiale.site/zimuferemezokdrqkf.pdfIn PDF document text
- https://jilarikogezinuv.weebly.com/uploads/1/3/0/9/130969280/3e3b74bb9c48ce3.pdfIn PDF document text
- https://zefisuket.weebly.com/uploads/1/3/4/8/134868467/mewex.pdfIn PDF document text
- https://bugomalaked.weebly.com/uploads/1/3/5/3/135324661/02050e66d68d.pdfIn PDF document text
- https://pafajawu.weebly.com/uploads/1/3/2/6/132682051/medenobarapite-panilizesab-jeboxekizevo.pdfIn PDF document text
- https://definifizuzum.weebly.com/uploads/1/3/4/7/134759181/6664290.pdfIn PDF document text
- http://erogan-encolumbia.site/supubulofiwifezimudawawivfulw6.pdfIn PDF document text
- https://wapojopaboxijok.weebly.com/uploads/1/3/4/7/134747084/2204531.pdfIn PDF document text
- https://gerudupox.weebly.com/uploads/1/3/2/7/132712596/8982321.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/pisedij/intensive_and_reflexive_pronoun_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e8ceb43f-6e30-457d-8694-68c18798bc60/data_structures_and_algorithms_in_python_textbook.pdfIn PDF document text
- https://s3.amazonaws.com/nojemi/what_are_the_12_spiritual_principles.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f8c4f2ea-f146-4971-92d9-6a8baf144766/67975626084.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4582552e-7a0a-48c9-8196-7b6e77832c0f/xerewivupodezezuj.pdfIn PDF document text
- https://s3.amazonaws.com/toguvaju/pioneer_vsx_1022_arc.pdfIn PDF document text
- https://s3.amazonaws.com/zuwosil/80303050426.pdfIn PDF document text
- https://s3.amazonaws.com/sukobogixe/life_fitness_c3_upright_bike_reviews.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/05ee0421-171c-4b58-9806-fa5978b4d1c8/36348418634.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/683535ba-e730-4d60-90cc-441e9bb87cc2/john_deere_7000_planter_plates_for_sale.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e39b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE39B | 5524 bytes |
SHA-256: a726862815dfb93d218e7c050e99eadb36505f8bf348e082db822beb6c5db377 |
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font_01_sfnt_off0000f662.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF662 | 11136 bytes |
SHA-256: 88976586e03c42e78e92d5e9eda07674ecfd66fb07bdc7c44ea7e62c93ce0a5e |
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font_02_sfnt_off00011c9c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C9C | 16204 bytes |
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15 |
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