Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df423eab2398550…

MALICIOUS

PDF

70.8 KB Created: 2021-01-12 12:13:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7cb928e24a5cd0d76dda36d6ff5b0baa SHA-1: 087fd9113d3864079f404398b272e42aa26b7487 SHA-256: 1df423eab2398550f0658788f7183ef36be479e511646d1e93d20218ed90ea57
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://traffking.ru/123?utm_term=formato+historia+natural+de+la+enfermedad+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450046/normal_5fb261a034283.pdfIn PDF document text
    • https://site-1173625.mozfiles.com/files/1173625/monkey_bar_rungs_for_adults.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470016/normal_5fe09cf8e2a0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426267/normal_5fc1c783a74c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5fdb3c9bcc9ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388048/normal_5fc721024f038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383805/normal_5fafda740c4a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427501/normal_5fad353a166b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413587/normal_5fe87f32b822b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410217/normal_5f978a59f1458.pdfIn PDF document text
    • https://cdn.sqhk.co/titubebojek/6grETru/juduwano.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392193/normal_5fc2c8a8a7215.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460058/normal_5fa9e4bbdc643.pdfIn PDF document text
    • https://site-1173522.mozfiles.com/files/1173522/production_order_confirmation_report_sap.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/6igThc5/gogo_live_app_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57D 5236 bytes
SHA-256: 56063c7af94df5d00ee3a0e8c4312378b3601cf19b9b31204e6fea4f1e54d530
font_01_sfnt_off0000e71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71B 11468 bytes
SHA-256: 178add1f0db48f36372380c755912ea35e5da1841055c8c26425d034ee94754b