Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7052cf8c2b7b314…

MALICIOUS

PDF

67.6 KB Created: 2020-11-11 05:14:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 110b5dabe811edb722319ea7d6d34e88 SHA-1: 148638fd97038847306039ddc2e35597fd6297c6 SHA-256: c7052cf8c2b7b31419d57bb0766c46b29f6376b48ab262371662ff5d34507f34
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://traffine.ru/123?keyword=delta+airlines+reservations+flights PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5f942ef7b151b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375896/normal_5f8fdf8916ba9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415754/normal_5fab1beac3beb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427780/normal_5f9ae9b2cb48a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5f8b6321d2f45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387928/normal_5f93707db0b97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426957/normal_5f9a3b89dbc2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dc98c3f-753f-4bf4-abdd-c4b6397baaac/mekuxopusuzejozivuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/23191639024.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/jabulatajibula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b359f139-4357-4e84-8eed-0b5131712e8e/votobozarero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e3c7a4f-e052-4ca7-8421-660d8a3d3e82/36773570244.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/basic_css_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af2ed312-c81f-4de2-bcf0-8db4ece79dee/ganubenutireridisonuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd9e542d-c9e5-46e3-8b9a-589badf1d2f2/civil_engineering_formulas_gillesani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/971810cf-9838-4174-93e1-c30b1660c013/20484347683.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE6 5088 bytes
SHA-256: f407a18283133fe1ccf86e094a0885b00b246d295e5dbc45cfe7aeaaba7f264c
font_01_sfnt_off0000d136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD136 5952 bytes
SHA-256: d6c987d4c104aa5575864387ec8581ac430351bda0975c4b02fe93c55f88a558
font_02_sfnt_off0000e079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE079 9572 bytes
SHA-256: 93b5dca3d4544e3cd783861768b432a4d9197da83ea397598a1acae4fac67520