Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee33caf97103243b…

MALICIOUS

PDF

74.5 KB Created: 2021-03-09 13:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 50f45d0b189ccef442e734d7311df27b SHA-1: 3af77a51820eeac1ebc3a5e3a97483173d183097 SHA-256: ee33caf97103243b3afb61619a0596e8b84b32d7ce87b28497a7b5d663ea8622
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs that redirect to suspicious domains, likely to host malicious content or phishing pages. The document body, though heavily obfuscated, suggests a lure related to software downloads, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=es+file+explorer+pro+apk+mod PDF link annotation
    • http://pokypka.xyz/rotterdam_school_of_management_mba_employment_report1kksx.pdfIn PDF document text
    • http://allwoman.site/8355813765786s3i.pdfIn PDF document text
    • http://igcopyrightforhelps.com/acetilcisteina_xarope_infantil_bula4rdr7.pdfIn PDF document text
    • http://youla-24.cc/cafe_racer_motorcycle_helmeto4vfm.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/57523507298.pdfIn PDF document text
    • http://trening-ekaterinodar.ru/yalla_shoot_apk_2016zcmxe.pdfIn PDF document text
    • http://zodelem.mygamesonline.org/are_blood_pressure_monitors_in_drugstores_accurate.pdfIn PDF document text
    • http://fanilobepewe.sportsontheweb.net/wifadizutaxiwososale.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/lemefofutomapox/32088955874.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/29530089373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48621f68-3fbe-4cd4-a3d3-c4d768eb3145/wilton_decorating_tip_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f566ffe3-6754-4a6a-8dc7-ba7d472abbf7/antique_magic_chef_stove_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/095ef623-f1e0-4af5-9584-e9545916b09a/what_age_is_appropriate_for_13_reasons_why.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c1af1c4-6934-4a92-b2a1-3158267b6851/xazekopebekefujeli.pdfIn PDF document text
    • http://xumuritikoxuk.myartsonline.com/how_many_times_can_you_pump_a_crosman_760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e63fc9-ad38-4037-979f-97c71c1a8712/rizilivaw.pdfIn PDF document text
    • http://rolubumemetujin.atwebpages.com/sukoja.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/chemnitz_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/20022669607.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.

FilenameKindSourceSize
font_00_sfnt_off0000e87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87C 5276 bytes
SHA-256: bacb462c287853aaf7eaa095136031c7020e06be2872cdd8fe3c4b7312517677
font_01_sfnt_off0000fa5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA5F 10000 bytes
SHA-256: 5d69eb368b8e5bdd3ecf0c484ac2f70f9d176e3f47202ec06827575d579b1e75

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