Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e85b4d59a81030…

MALICIOUS

PDF

81.2 KB Created: 2021-05-31 09:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 3689d60e0e9b98c6bc6913564b997f08 SHA-1: 234ace092e77e61dec7f0aac3014d5f9d9b0294c SHA-256: b3e85b4d59a81030b91f29f7982e1e4e049b7a06843a004efe7ea56729e88d0b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body contains text related to 'Acapella maker apk' and the embedded URL points to 'mezovuduw.ru', suggesting a phishing or malware distribution lure. No scripts were extracted, but the presence of an external URI strongly suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/123?utm_term=acapella+maker+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477921/normal_602df1b01b8a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408862/normal_5fc91339af5c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465394/normal_6008c69f7313d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387590/normal_5feb6a0d30e05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460042/normal_60464a3d684b8.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/2583acec-8e42-4a40-8aa6-c03ee08cdb81/potajaximi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40cb7ea6-88bf-4c06-9a63-cc1a3004c5b2/how_to_pair_selfie_stick_remote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6677ed-8176-4b1e-9f7c-37d67515ba91/proyectos_de_investigacin_en_educacin_primaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fda831e-fcad-4fc0-b171-9557d80bda95/research_proposal_writing_skills.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baf30283-4d03-4248-a357-cd56137f21db/who_owns_the_dyson_company.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1af23ac-5962-487e-9bf3-431830db59a8/bissell_little_green_pet_pro_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3af53d08-f52a-4579-8f89-42d985a1142c/what_does_it_mean_to_be_hit_by_cupids_arrow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fee250f5-3ff4-4ba5-99e2-5abe72cc316b/lamugop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1d6e02-01b8-4f1b-8e60-21b98ded705c/modern_indian_history_timeline_upsc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0362474f-78ae-4748-aac8-1b6ea99364d9/what_is_iso_27001_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f69cb84-4741-42ee-a160-70468a7b8ce8/muvanagagorifupoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b2a2433-480a-4742-a786-4933de9e10c3/92988954357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff0c4efe-c96f-456d-8b4b-367d8ed556e5/download_forex_trading_app_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cd04776-e85c-4703-8846-77303c44cadf/48786603956.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_off00010051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10051 4952 bytes
SHA-256: 4f3b6d6aa0dd46786cfb03ff47b2a669dd6730b4b555d4647a96faf59031bcb4
font_01_sfnt_off00011117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11117 11464 bytes
SHA-256: 12b3de724ecc69d4c3bfad6e216539a573e3231f0e659996bb6db383e79368a8

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