Malicious PDF — malware analysis report

Static analysis result for SHA-256 519e0372ff1a87fb…

MALICIOUS

PDF

74.0 KB Created: 2020-12-19 11:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 67660cb1f3f96b93ab5ed2bf55807e64 SHA-1: b9b40b1138d077d47daaca0a1cf8c904878ba4a0 SHA-256: 519e0372ff1a87fbefadba07c6d8123eae52bb2bbe128d5e1834bd8d92ad10ad
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 0.9999

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://traffking.ru/123?utm_term=history+of+tire+tracks+in+yard PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5fafdeb91f4fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425738/normal_5fb801a780719.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/sabobenuwe/dolphin_browser_for_android_tv_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/82558336759.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/building_construction_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0571221a-9735-4517-a038-fae877d080a0/best_buy_headphone_return_policy_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/7293591496.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/co_founder_agreement_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55455df3-6c9c-4e58-8868-33596d26180a/tyrone_s_games_hacked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bed1fb8-7196-4077-b507-9747428a79db/fisudidas.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/wiruxojovujonal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03143179-4eb4-4dd2-a187-b788c0f2fffe/famofidejuwokin.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/navegadores_de_internet_ms_utilizados.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af79f32-24a2-4acc-8647-e0beda06910f/ecology_lab_simulator_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/kovokowekazufilar.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/xilabexaru.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_off0000e1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DF 5112 bytes
SHA-256: 3c048ea7b3d22baa95acf89a3048788b979b89b0361aaccea4d79315b5d87616
font_01_sfnt_off0000f35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35B 11696 bytes
SHA-256: 6594e5c62f0bb94f4fbabc3ca6fef72cbd185776145ed8c341cafb7f8a5180a0