Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ddbe2dce37fe80…

MALICIOUS

PDF

91.0 KB Created: 2021-03-01 01:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c55186c8d44d6aa1db14461668d01517 SHA-1: ac494ad4cd41490c5d0cfcd5ec011cc932d6567f SHA-256: 05ddbe2dce37fe806c2e3541c35381de628c32a37d7002276b2f1173ab247ba5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, suggests a lure related to a 'Glacier bay toilet manual'. The presence of external URIs, particularly the one pointing to 'druttle.ru', suggests the document is designed to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://druttle.ru/wix?keyword=glacier+bay+toilet+manual PDF link annotation
    • http://knitfqph.site/belkin_n150_wifi_usb_adapter_installation_software02hvs.pdfIn PDF document text
    • http://xefenudopete.22web.org/8856817598.pdfIn PDF document text
    • http://dektesheff.xyz/acrylic_sheet_supplier_in_quezon_city1iss7.pdfIn PDF document text
    • https://cdn.sqhk.co/segisaxa/ihjfNif/piraladoxixojo.pdfIn PDF document text
    • http://topsol.xyz/media_probabilidad_y_estadistica_definicion3oqk2.pdfIn PDF document text
    • http://jushq.pro/77398229073a22e9.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/jazofi/10652755661.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/fosedonakebokaku.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/fujabokidokodixisasumi.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/begisavapebopuwix.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/74768050606.pdfIn PDF document text
    • http://mikipifovusi.epizy.com/43793241906.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/ge_carescape_v100_operators_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/suponotobogazotap.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/pitogemalofozuxiwi.pdfIn PDF document text
    • http://kasarokoxakuke.epizy.com/best_obd_diagnostic_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/floor_cleaning_robot_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/supplier_quality_assurance_engineer_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/reporting_bivariate_correlation_apa.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/mandated_reporter_nyc_training.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/using_contact_cement_in_cold_weather.pdfIn PDF document text
    • http://vatamutotomo.epizy.com/inferno_1980_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/dovomikixibitapewemama.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_off000126eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126EB 5040 bytes
SHA-256: 825c57ac1c76dc948c20430f6d987dde391619d00161e0e182364b4b09cbd3dd
font_01_sfnt_off0001380b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1380B 11180 bytes
SHA-256: 739aad33db05f828f2cbb65b9a87fb2708b38e24a959915f286b897c1c4448b4

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