Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee253c1a1076137a…

MALICIOUS

PDF

76.8 KB Created: 2021-05-13 12:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d5397ec7ec1130d0df770722802b9289 SHA-1: 7cb7ae460c03e85ff4667449af7dd401a41af882 SHA-256: ee253c1a1076137a3a8e8f7ce82aa4b7b712c29978398abd2a1695386809ade7
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into clicking it for financial information. No scripts were extracted, but the presence of the malicious URI is a strong indicator of a phishing or credential harvesting attempt.

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://midufefew.ru/strik?utm_term=dbx+stock+price+history PDF link annotation
    • https://tojumemi.weebly.com/uploads/1/3/1/3/131379390/fivexajaka.pdfIn PDF document text
    • https://tesevazaxuj.weebly.com/uploads/1/3/4/4/134476418/9874054.pdfIn PDF document text
    • http://kumisaruvejinud.iblogger.org/internet_addiction_symptoms_evaluation_and_treatment.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/a411dbab-e34b-4e1e-91a5-26af33cd7a15/skim_milk_on_21_day_fix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b38e8be6-c732-4d6b-9e9f-f70fac292cd7/2026068069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7accd9fb-3265-4db3-a5a4-bdf79c594a92/62026261116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84c4e2c7-6fa6-4b6f-bed5-a80d9b61b1ef/favorite_books_to_read_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/bobotufazodikagip.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/37734369026.pdfIn PDF document text
    • http://rawuwad.epizy.com/economic_weaker_section_certificate_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61f78677-d205-4326-b6dd-0cba4dbec189/element_70_inch_tv_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/pobepaserob.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/59316726633.pdfIn PDF document text
    • http://baniginoso.epizy.com/royal_navy_recruiting_office_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b24b286f-e8b2-4c2c-a794-e5213f61ecee/dd_cr_50_dracolich.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d459a60-83ee-4b93-9d1a-b07dee3d0469/what_is_the_best_temperature_for_volcano_vaporizer.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/1500_calorie_diet_to_lose_weight_fast.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_off0000ee47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE47 5152 bytes
SHA-256: 84f0e90fb3f082ccde431154b0d941fc4e0a9f477c600d8c800f9da32a89a244
font_01_sfnt_off0000ffdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDF 11248 bytes
SHA-256: f76b3fcb44b3076aeabfa30c1af1226c1ca14a5a4163d38f31fac8b89bd00a29

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