PDF malware analysis — malicious · 515b1f2f0bff2501

MALICIOUS

PDF

137.1 KB Created: 2021-05-19 15:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 2a3c89601ab7cfe88b85390d1be2fc2b SHA-1: 566ad830a25d0719ba80b110f5d83fbe8d32a5de SHA-256: 515b1f2f0bff25018ae595f4fda061b453a0bc51355765faf0ce62020c92b0eb

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' pointing to a large number of PDFs. The primary URL, 'https://lozipotod.ru/strik?utm_term=descargar+gu%25C3%25ADa+de+camping+espa%25C3%25B1a+pdf', suggests a lure related to downloading a Spanish camping guide. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent, likely phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9987

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://lozipotod.ru/strik?utm_term=descargar+gu%25C3%25ADa+de+camping+espa%25C3%25B1a+pdf PDF link annotation
- https://static.s123-cdn-static.com/uploads/4411683/normal_5fdff842c1b36.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495855/normal_602bffb478839.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408478/normal_5fc74df84d628.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412173/normal_600bf945a572a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4478667/normal_5fff7791cc694.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4372735/normal_5fc60e0fcd0af.pdfIn PDF document text
- https://kugibiredatejag.weebly.com/uploads/1/3/4/3/134319346/gimopepefedof.pdfIn PDF document text
- https://vaxunupix.weebly.com/uploads/1/3/0/7/130775436/70384.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447436/normal_5fe8158aa5b84.pdfIn PDF document text
- https://mosejibufo.weebly.com/uploads/1/3/4/4/134437632/jebitixola.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/4fa29af4-03ed-46d0-b5a5-4083d70348ff/mevuwujaw.pdfIn PDF document text
- https://s3.amazonaws.com/lijopavexanuse/android_studio_change_domain_name.pdfIn PDF document text
- https://s3.amazonaws.com/lepefi/miregunukujef.pdfIn PDF document text
- https://s3.amazonaws.com/zobuwubedak/cambridge_proficiency_masterclass_answer_key.pdfIn PDF document text
- https://s3.amazonaws.com/mubefula/cursos_de_ingles_em_orlando_florida.pdfIn PDF document text
- https://s3.amazonaws.com/zijivevip/flotec_pump_parts_home_depot.pdfIn PDF document text
- https://s3.amazonaws.com/bivanud/ms_university_baroda_admission_form.pdfIn PDF document text
- https://s3.amazonaws.com/genijusemu/52736838826.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/12cc3d64-f730-4a94-b056-412e354c77ef/primeros_auxilios_psicolgicos_pasos.pdfIn PDF document text
- https://s3.amazonaws.com/dezajok/rockler_adirondack_chair_templates_with_plan.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/df17c402-5ee8-4d5f-8929-28bf342944a0/mimigasiwilafidesatijiwo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d1b5eb27-9eae-4f1c-9830-0386e834c363/netgear_ac1600_wifi_cable_modem_router_review.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b4d02787-56a4-4f2e-96a6-8cfa27eb65c1/line_6_spider_v_30_mk_ii_review.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001c951.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1C951	5400 bytes
SHA-256: `d93888a17fde5428284708b92d5566ff693e681d08fd1c89d534c2284f1deddb`
`font_01_sfnt_off0001db4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1DB4E	14292 bytes
SHA-256: `53ceac3ae6db800810a8468655af02f63e8fc5a416264374ee80cbb8af02362e`
`font_02_sfnt_off0002064b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2064B	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

Open this report in the interactive analyzer, or submit your own file for analysis.