Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b583a3d3cbb9f23…

MALICIOUS

PDF

79.9 KB Created: 2021-04-02 07:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 99a3a7486eb58d097505d84828fa13e2 SHA-1: be5ee5332dc89d169180c0ed8da5ed99ddfe3c71 SHA-256: 0b583a3d3cbb9f23f52dd603f6a7300478d946772df5e502556c983fb2c5bf19
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://dugedepap.ru/award?keyword=acuerdo+de+paz+firme+y+duradera+pdf PDF link annotation
    • https://sofotegepure.weebly.com/uploads/1/3/4/5/134522016/salaxunefu.pdfIn PDF document text
    • https://gamitodotabezoj.weebly.com/uploads/1/3/1/4/131453651/3153988.pdfIn PDF document text
    • http://winoorama.fun/cara_membuat_biogas_dari_kotoran_sapipd24f.pdfIn PDF document text
    • https://bugituwixumanuz.weebly.com/uploads/1/3/4/7/134722584/4880545.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/how_to_become_an_iso_27001_certification_body2p3oy.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/twisted_metal_black_ps4_trophy_guide.pdfIn PDF document text
    • https://tifixexeruwa.weebly.com/uploads/1/3/2/6/132682204/0558b05490db7aa.pdfIn PDF document text
    • http://puximosuse.iblogger.org/corrugated_cardboard_sheet_sizes.pdfIn PDF document text
    • https://gilibowipasumew.weebly.com/uploads/1/3/4/5/134578686/52b6e6db43.pdfIn PDF document text
    • https://legawugo.weebly.com/uploads/1/3/4/5/134509979/641447.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mimojududike.epizy.com/4113785639.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/dunkin_doughnuts_wake_up_wrap_nutrition.pdfIn PDF document text
    • http://mezezix.rf.gd/locus_level_of_care.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/jakivazavo.pdfIn PDF document text
    • http://vigukesege.epizy.com/causes_of_gestational_diabetes_mellitus.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/arya_movie_feel_my_love_ringtone.pdfIn PDF document text
    • http://zuzimadatunukag.rf.gd/kijowejuwedikiwupedaxuwet.pdfIn PDF document text
    • http://mesesoriran.epizy.com/kagusijawufozi.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/nunusivixozo.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_off0000f761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF761 5232 bytes
SHA-256: 4c8ea9be73997e56c23d7724dcff5c077554a9e5ac6c23b7e86dc434c326ec0b
font_01_sfnt_off00010934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10934 12260 bytes
SHA-256: ae371f4f9f3fa24f42f37541b7114654c5e7ddcc2f0a68ac1542323280072c4d

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