PDF malware analysis — malicious · cb13358f5060744d

MALICIOUS

PDF

79.5 KB Created: 2021-03-20 08:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17

MD5: f09facefe7053e7dbc54b61fe2bef385 SHA-1: cedbfb42ef42067a22d5b3914bd3a1ba1b4e4d4a SHA-256: cb13358f5060744d4d070ba00c18a1983279dd5e857df1ccf90df0ad5ae05b64

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs, with one prominent URL pointing to a domain associated with phishing and malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of creating numerous links on disposable hosting, often used for malicious purposes. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to a harmful site.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://soxebez.ru/wix?keyword=uptown+funk+you+up+download PDF link annotation
- https://static.s123-cdn-static.com/uploads/4478398/normal_5fc5966e801db.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408174/normal_6023341ac58c7.pdfIn PDF document text
- https://cdn.sqhk.co/buwozumu/bagdAje/amusement_parks_open.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446280/normal_5fdafc1b1df68.pdfIn PDF document text
- https://cdn.sqhk.co/kimejijomaki/dPggigf/palivalatijemiridesako.pdfIn PDF document text
- https://cdn.sqhk.co/vunebapenuj/hCEKH5X/dilanazukul.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495387/normal_60496a422be4f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447464/normal_6004dabff2a65.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382412/normal_601b71a679e43.pdfIn PDF document text
- https://cdn.sqhk.co/fakozunada/igfhhZQ/defofitu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481673/normal_601d376c79f80.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
- http://pufigaginoxizu.rf.gd/metformina_500_mg_costo.pdfIn PDF document text
- https://025b4bf0-2906-4f5f-8a0f-6d4b68fc9518.filesusr.com/ugd/148ee2_7f9faf786d1b40a29b7664bab01ff4bc.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/fd2939cc-75aa-40a8-9be4-c7f83369d5e0/zuwuripesiwitojol.pdfIn PDF document text
- https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_0593991f4f3044818d58999b471747ec.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/23b1dda4-99e7-4762-a53e-0bb8d1e1d862/50232768079.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/271f63d9-0586-4acf-b6e9-5bbf2ad8c29a/wuvubawenefekodidezuza.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/97fd9a0c-5c5c-482d-b19a-267f0f20ba9d/cuanto_es_6_1_pulgadas_en_centimetros.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d4bc35d2-a636-47ff-bc21-65066b7c2275/sunbeam_heated_blanket_microplush_10_heat_settings_mushroom_full.pdfIn PDF document text
- http://nejuzuwesikodik.rf.gd/up_board_result_2018_class_10_marksheet.pdfIn PDF document text
- https://e5058785-d3d1-442e-b0ad-d0045053dde7.filesusr.com/ugd/17c622_a6c3973146984a9284adbe6dc44cdd21.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000db20.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB20	4724 bytes
SHA-256: `a4bddf3a3187853989381a7d39b679a89734d4653fd0fbbbde63c17c8b8bf455`
`font_01_sfnt_off0000eb58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB58	17444 bytes
SHA-256: `d8ee9d1b74eb04600e45be1f7faba43e837a874d03108752e67708667fc21e20`
`font_02_sfnt_off00012022.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12022	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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