Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8d4646827d621a…

MALICIOUS

PDF

77.2 KB Created: 2021-03-21 10:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e68e120327b8f881a59a7dc3ac5c6c18 SHA-1: 9cf78c26b8b55ee07cb6f38a6b2903943c4cbd63 SHA-256: 9e8d4646827d621ac2880a53a8e9fa7c49844417faa36ce996f5a767869bce51
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with a significant number pointing to suspicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to exploit user trust.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/award?keyword=calendario+serie+a+milan+pdf
    • http://saxefitipar.iblogger.org/guwegexetodokunosekajede.pdf
    • http://wagikopegufiza.66ghz.com/52880263801.pdf
    • http://bexatasekewed.iblogger.org/66096329431.pdf
    • http://norusezuluwo.iblogger.org/17510265323.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5bfe3bf6-f1c4-4685-93e2-b1b87c96ebcd/what_day_does_walmart_restock_clothes.pdf
    • http://zepibugab.rf.gd/buffalo_lake_wisconsin_fishing_report.pdf
    • https://36c7e617-1221-4173-b726-d5bce2878801.filesusr.com/ugd/610d21_bff81c5c61e54411ab39732a8f2d3032.pdf?index=true
    • https://uploads.strikinglycdn.com/files/abf13353-3454-404b-86e3-a3857be9e211/medieval_2_total_war_units.pdf
    • https://uploads.strikinglycdn.com/files/f6af3866-c3b2-4fcd-97de-ad1df6f42fc9/how_to_get_a_job_with_the_usps.pdf
    • https://3d7c42e8-cad9-4196-8f3c-0f210fd97588.filesusr.com/ugd/1b7c00_c054170eda6c43eb9c4032c31fa02a51.pdf?index=true
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_021a4cace7004a92bc2586a5f5c0981f.pdf?index=true
    • http://tikobonojaxax.epizy.com/69692490195.pdf
    • https://uploads.strikinglycdn.com/files/1fe506d1-56e4-4466-8473-88fe8e1f093b/41544008379.pdf
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_8dd020e498434b5cbcf070b7e29aec16.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f30c9a92-c1f2-4fe5-8060-76e711aaa2ac/zinisowizowiw.pdf
    • https://uploads.strikinglycdn.com/files/e0884ff4-d71e-4120-933f-21a2bb66da8d/what_is_air_standard_efficiency_formula.pdf
    • https://651f5d5e-5f42-4fb0-8380-889764ca350f.filesusr.com/ugd/b2f7c1_075e39a601d14f908acd724c0062d3ec.pdf?index=true
    • http://vosoziwidusetur.rf.gd/how_to_use_fluke_62_max_infrared_thermometer.pdf
    • https://uploads.strikinglycdn.com/files/1b1f5dbe-5410-4750-ac3d-534dd0188229/paint.net_transparent_background_plugin.pdf
    • https://uploads.strikinglycdn.com/files/1c370120-ca22-4dd9-8cf3-9753cd5dd22f/rafofir.pdf
    • https://uploads.strikinglycdn.com/files/2586694b-4748-4fd9-9f91-d858f6bf74c0/74196470497.pdf
    • http://sinipuxi.epizy.com/banting_recipes_on_a_budget.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0ed.bin
ae658781caaed0694e9b33925f6b0f044c416c9032487fcfb78806d2708e2de6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0ED 5092 bytes
font_01_sfnt_off0001021e.bin
7e839574a349b92d210b9c96010073e1b2fa3ba45f985761c473e89d1b6f58b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1021E 10716 bytes

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