Malicious PDF — malware analysis report

Static analysis result for SHA-256 046ea4be8605af39…

MALICIOUS

PDF

90.9 KB Created: 2021-02-11 13:09:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 696f47d11478c8cdfb161a88a61d2923 SHA-1: 6ec34d4bc3901eaa824156e14b358cae89b0abc4 SHA-256: 046ea4be8605af39caa0c4ddafecca63f185b330b9e915087d1f5ef808f74cb0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest an attempt to redirect the user to a malicious site.

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://leonvi.ru/aws?utm_term=britten+norman+islander+performance PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387565/normal_5fe5a2de9a1cc.pdfIn PDF document text
    • https://cdn.sqhk.co/novimabe/OBjdvjh/47521549086.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378155/normal_5fd101049cb6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371023/normal_5ff043cf92c2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454303/normal_5fd131d375724.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485156/normal_5fe37fd341481.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379473/normal_5fcf585f2471a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450156/normal_5fdcf68554b46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5fd670b9ef82e.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/e6AjJja/6111614708.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/lixasifasi/65811950401.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/aspen_hysys_7._3.pdfIn PDF document text
    • http://gifexepes.rf.gd/aspiring_guides_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/gulukiz.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/powerpoint_theme_template_free.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_off000124b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B4 5348 bytes
SHA-256: f37d86907bf12f3d5235463db1326acc6be39eff1191761612d1bf2166a5d702
font_01_sfnt_off000136c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136C9 12144 bytes
SHA-256: 1d710ec9999207266df090a35f01c436e402162a1f42c4abdd5deddd3d65dc89

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