MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics as malicious, including brand-impersonation credential phishing (USPS) and a link farm. The embedded URLs, such as https://pelibifir.ru/strik?utm_term=can+you+mark+mail+return+to+sender and https://rumodabumuxe.weebly.com/uploads/1/3/1/8/131857513/13217f9.pdf, are indicative of a phishing campaign. The ML classifier and ClamAV detection further support the malicious nature of this document.
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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Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rumodabumuxe.weebly.com/uploads/1/3/1/8/131857513/13217f9.pdf.
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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=can+you+mark+mail+return+to+sender PDF link annotation
- https://cdn.sqhk.co/natefisaka/iecx5ge/pijosakawos.pdfIn PDF document text
- https://cdn.sqhk.co/zuwiwejagub/hauieAy/civil_war_1862_map.pdfIn PDF document text
- https://cdn.sqhk.co/kawonidoza/gijjqI9/online_shopping_uk_food.pdfIn PDF document text
- https://rumodabumuxe.weebly.com/uploads/1/3/1/8/131857513/13217f9.pdfIn PDF document text
- https://cdn.sqhk.co/zaronafi/hihhgja/colonoscopy_surveillance_guidelines.pdfIn PDF document text
- https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/nofivipuxereva.pdfIn PDF document text
- https://cdn.sqhk.co/jememobak/es5hbge/helping_laniakea_rs3_guide.pdfIn PDF document text
- https://wakukaxowemaba.weebly.com/uploads/1/3/5/3/135303752/7d1012741.pdfIn PDF document text
- https://cdn.sqhk.co/gevajoke/cPV9jji/fantasy_flight_games_star_wars_rpg_review.pdfIn PDF document text
- https://cdn.sqhk.co/dufimogemeka/idhiljg/flickr_creative_commons_dataset.pdfIn PDF document text
- https://cdn.sqhk.co/vetedaxuzele/hf2hdgh/46557357778.pdfIn PDF document text
- https://cdn.sqhk.co/dozawulu/qupmYja/merge_dragons_walkthrough_golden_meadow.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/25d09255-168f-4f18-bcf3-348b7f89de28/rebelion_en_la_granja_resumen_por_capitulos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3d23ae55-5453-4dce-954d-1ac66153759e/how_to_train_your_dragon_2_cast_characters.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9e8645a2-c9c0-49a4-959b-92a163d2673b/health_and_safety_executive_5_steps_to_risk_assessment.pdfIn PDF document text
- https://s3.amazonaws.com/xopugup/57101997754.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7da34dc5-8887-4259-8970-cc2d23a61373/hamlet_by_william_shakespeare_summary_in_hindi.pdfIn PDF document text
- https://s3.amazonaws.com/vuxagixil/analisis_de_la_pelicula_diario_de_motocicleta.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/09da2082-314e-4fb1-a475-69c5b7b6bafb/toyota_camry_220_sei_for_sale_in_sa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/54cdfa41-2d97-4174-8118-a8f045b556cc/how_to_remove_a_glacier_bay_toilet_seat.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/df0fa09e-3dbd-4c6f-beaf-49dd7c57f4d2/sapomev.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_off0000ffa9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFA9 | 5040 bytes |
SHA-256: bc9fc89c9cf8f1c6e41147a640f7ca37a8f1f154eac0e25e676b4c41dd14c8d9 |
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font_01_sfnt_off000110bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110BD | 11704 bytes |
SHA-256: 27ed6a736c338e3ead065eb8e42140e8a2b447f542a0594853beb386c6967ac2 |
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