Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cbd4aa493daf438…

MALICIOUS

PDF

68.3 KB Created: 2021-03-24 01:46:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 63e79dbfb649e3b2caeb3d38708f1f8b SHA-1: 5337667fb90d20466f9b4ae61112d182af5c391e SHA-256: 5cbd4aa493daf438794fd958605e61b121102b6244800b9d269b1c739b4a6634
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The embedded URL 'https://soxebez.ru/wix?keyword=adt+command+panel+manual' suggests a lure to disguise the malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to redirect users to potentially harmful content.

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://soxebez.ru/wix?keyword=adt+command+panel+manual PDF link annotation
    • http://giwosoto.sportsontheweb.net/fifegeposel.pdfIn PDF document text
    • http://mufajaku.medianewsonline.com/pagutoz.pdfIn PDF document text
    • http://tevaruv.sportsontheweb.net/9266199354.pdfIn PDF document text
    • http://wojesukuzak.mygamesonline.org/fokabazebajuzafozale.pdfIn PDF document text
    • http://kikifikoxije.mypressonline.com/bantu_education_act_47_of_1953.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463808/normal_5fcafad52be5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388818/normal_602a8cbbe9fda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480758/normal_60176e82675e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413462/normal_5fe185a124187.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/a4245b03-0e0b-4bfd-ab04-7ae1a0d729a9/the_power_of_praying_and_fasting_ronnie_floyd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eff69481-7655-4644-83d3-82bf5583de49/traductor_italiano_espaol_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c04dd646-b591-4a8d-bb92-85ed5285f29b/solution_focused_therapy_training_brisbane.pdfIn PDF document text
    • http://xawiwevivuzox.onlinewebshop.net/cell_city_analogy_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/as_a_man_thinketh_book_in_hindi_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87c8fb7c-1374-4fa8-be16-af93327b2cdc/orgrimmar_mount_trainer_bfa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfd1d847-cac7-4e39-88d5-8aa206cc2871/sikuxipofugaj.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/logarithmic_differentiation_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fab0e3e-fd1e-43a9-899b-2994943df5c7/stc_1000_wiring_diagram_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b18d0dcd-ffaa-4dbb-8b72-7aaa076cb95c/oreck_xl_canister_vacuum_cleaner.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/how_much_weight_can_a_2011_ford_ranger_tow.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_off0000cee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE1 4936 bytes
SHA-256: 3db9dcac497eaac97260557ce5568e12fb8b7cc98fbfdb62acc35ff89f8bfd33
font_01_sfnt_off0000df98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF98 10364 bytes
SHA-256: a3fe471ac2561bdf6b17925ee2b64ad8e667cf5909330074740174645e13a08d

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