Malicious PDF — malware analysis report

Static analysis result for SHA-256 d990b8993581d498…

MALICIOUS

PDF

80.0 KB Created: 2021-01-21 10:43:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f869fa62332c397a2b7f42368d5ec966 SHA-1: 17586d33e290e80c93bc1ca07fe43705006942de SHA-256: d990b8993581d49887a5a5c6c6742d08e1d13c8eee1b934ffcefffb9361d0d23
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URL pointing to 'baarspo.ru', which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to reference 'battle royale mode in cod mobile', suggesting a lure to entice users to click the malicious link.

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://baarspo.ru/wb?keyword=battle%20royale%20mode%20in%20cod%20mobile PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462732/normal_5fa3b86fc81d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382780/normal_5fd2d968bff77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389585/normal_5fcc82630f1eb.pdfIn PDF document text
    • http://nobirejajatit.iblogger.org/34467233410.pdfIn PDF document text
    • http://logowiwubapokar.iblogger.org/forklift_truck_daily_checklist_template.pdfIn PDF document text
    • https://cdn.sqhk.co/sejujona/blG2vha/konamela.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxugaveg/higeiiy/bizakenixa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367914/normal_6000cab0181d4.pdfIn PDF document text
    • https://cdn.sqhk.co/tikikizeveni/jhXjgib/81556517557.pdfIn PDF document text
    • https://cdn.sqhk.co/liregagibago/Hjbujf8/tiktok_logo_gif_transparent.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/fejififimaketo/76790823621.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/helmet_of_salvation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/norulusofopeguweb.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/authority_letter_format_for_car.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/complaint_management_system_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/template_calamiteitenplan_ict.pdfIn PDF document text
    • http://kixixiwibatogit.epizy.com/cbse_net_january_2017_geography_answer_key.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED40 4328 bytes
SHA-256: e11cbe23422dcd99bf793785db2126871ebba0c88115f5eb06234fa6d9493d39
font_01_sfnt_off0000fc96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC96 5200 bytes
SHA-256: a638d1d41b4e4c783b2920f03ae4e0c08e1f965edb1ec2736af9791c64ef8660
font_02_sfnt_off00010e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E34 10612 bytes
SHA-256: 045e5b55857f94d723132798ce2d2f9a86483d3f56ee8ed86a339e9a9446f4bb

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