Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f678ac8700e18e…

MALICIOUS

PDF

75.3 KB Created: 2021-03-20 04:31:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 6e96eff494a39675f3eae21fe1ef8cf2 SHA-1: 689c581cc4fa2cb89511baf1b924345b109256ff SHA-256: 09f678ac8700e18edd8570230af5a9e02f5e48a388326fdca8c41d5118be78c7
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'https://golowaki.ru/award?keyword=car+wash+business+plan+template+pdf', which is likely part of a phishing or social engineering scheme. The document body, though heavily obfuscated, suggests a lure related to a 'car wash business plan template'. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

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://golowaki.ru/award?keyword=car+wash+business+plan+template+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368486/normal_603540c71f1cd.pdfIn PDF document text
    • http://igcopyrightforhelps.com/psicologa_ideologa_y_ciencia_braunsteinns346.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413122/normal_6046494eefedf.pdfIn PDF document text
    • http://mobile-media.moscow/7634835697krqii.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/b23516c7-c957-4487-8949-7a4bc4d3f8df/the_last_song_movie_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/bpsc_application_form_date.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/clendening_lake_ohio_fishing_reports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc028c99-5f30-4889-ab77-5ec7949d2ae9/speed_queen_dryer_repair_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/301a2d12-81a0-4ccb-8baa-fc7477ff8aff/how_to_fix_washer_shaking.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/gedabomigukiseva.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/online_converter_to_word.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/general_agreement_contract_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dd82ffb-fc5a-4ef4-b207-6054c18e572d/4519611296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50622a4f-1a2a-44de-8d5e-adb8190535db/names_for_twins_in_yoruba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/216a7b8d-a5fd-493e-85ac-0228efdca6cb/what_is_detriment_in_contract_law.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a6d729a-8310-4f6b-b434-d3893d363df2/luzuzevamumedo.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/rupisemexenedoliredanafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62766fec-050a-4571-9fbe-7e1f80bcf866/love_story_lyrics_taylor_swift_karaoke.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_off0000e8a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A3 5420 bytes
SHA-256: e101679dd637e1ec12f44b24264b07ee8dae5322300f3baf2c9cc5020a136b36
font_01_sfnt_off0000faf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF0 10688 bytes
SHA-256: 66d7a255f6a7e11eca569147d33d145d84a2cbec12c99329d2fa765d4429bc0e

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