Malicious PDF — malware analysis report

Static analysis result for SHA-256 05b5edf5f8b1af38…

MALICIOUS

PDF

65.6 KB Created: 2020-11-10 13:21:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 710e4598b74111ace11b939caefd90b6 SHA-1: d773cdb9138b649b5ecd561dc5e471b5cb7b4d9e SHA-256: 05b5edf5f8b1af3866c1ef19d93807611466cd82c66b8358aa7ebef233c793d5
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/strik?keyword=your+car+will+be+towed+notice PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f8d3cb472d37.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/bowigisutogufawolin.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/balajasutur.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/ruzumeb/major_world_events_in_1994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72882067-4d95-4afd-92ac-54b2bbd5b98a/xajejovava.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/theme_for_what_happened_during_the_ice_storm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e466c12-b7cb-4c34-a91f-0bb79efca3d8/29755711158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0504cfc3-e5f7-4b79-a072-6819864cf054/rizibemugem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78080a22-6a3f-4b0e-880f-871b15cc74df/xogasonerenukuta.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/protein_synthesis_steps.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/asphalt_nitro_apk_mod_uptodown.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46a07627-c470-4a3f-8070-ff1f97ade6ac/jasuzi.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_off0000c409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC409 4948 bytes
SHA-256: 8e11aa2c409da441233f892e02b2f2f9c335ccbb68e78eb00ff277f79a0dfd17
font_01_sfnt_off0000d4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FC 10844 bytes
SHA-256: e0a69dbdb3678c87a68659ded23eab89302398e1acbb69b9a58e0273f6dc126d