Malicious PDF — malware analysis report

Static analysis result for SHA-256 387b3656aaec5908…

MALICIOUS

PDF

62.6 KB Created: 2020-12-18 21:10:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c4e8cef8df5f760c9c0f221da5e4611a SHA-1: 921d052cf13940839a947cbb30ebcf0dee8185ea SHA-256: 387b3656aaec590843003005b3c0ed1599c21be162024524aa7b06bb37ac666e
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://trafficel.ru/strik?utm_term=liz+claiborne+blouses+uk PDF link annotation
    • https://galuxenezinex.weebly.com/uploads/1/3/4/4/134437763/niwajetefivin.pdfIn PDF document text
    • https://kaledawuvilef.weebly.com/uploads/1/3/4/7/134727412/2186826.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374835/normal_5f8d91684090f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408595/normal_5f9817b8b2497.pdfIn PDF document text
    • https://tapotupuj.weebly.com/uploads/1/3/4/8/134866757/jijena.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/dakebesuvum/chinese_visa_online_application_form_cova.pdfIn PDF document text
    • https://s3.amazonaws.com/dirijazi/todekumosanowurosupuj.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/fractions_percents_decimals_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/corrugated_steel_roofing_material.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/icelandic_mountain_guides_association.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/sabokadid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0175d14-2e47-4262-88eb-35aebeae8c64/vozutudimeji.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_off0000b619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB619 4988 bytes
SHA-256: 784c2a3132493526eec620f29e5923115d27f52b95c13c630217cd358eb5aebc
font_01_sfnt_off0000c72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC72A 12036 bytes
SHA-256: 9d6c6a099074ef174417efaa8ab41da7b64b80f14d2e3f43b7b1a4377cdccf7d