Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49097106690b5f2…

MALICIOUS

PDF

68.6 KB Created: 2021-01-05 16:19:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9c963240742f78133aa71df7f689916 SHA-1: d641c6ca223ee670ec9b7fa0abc16efce1cee67e SHA-256: c49097106690b5f2f420b504fe85b60114d4eff2723767a6172804e640842182
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a suspicious domain, likely intended to host phishing content or a further payload. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=blue+pitbulls+for+sale+in+indiana
    • https://cdn-cms.f-static.net/uploads/4380073/normal_5f8bc84ea4d85.pdf
    • https://cdn.sqhk.co/jofutagi/YHaedGE/transformation_church_relationship_goals_podcast.pdf
    • https://cdn-cms.f-static.net/uploads/4377095/normal_5f904ec268df9.pdf
    • https://cdn.sqhk.co/wunemuruk/njdCFP1/birthday_cake_decorations_for_mom.pdf
    • https://static.s123-cdn-static.com/uploads/4455207/normal_5fdcd8eb1792f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fexuror/8989145741.pdf
    • https://uploads.strikinglycdn.com/files/7a69d6a8-675f-4610-835b-fe0fd308d738/xejamofim.pdf
    • https://s3.amazonaws.com/zetare/35932899256.pdf
    • https://s3.amazonaws.com/xelimewat/wigejatanolukogod.pdf
    • https://uploads.strikinglycdn.com/files/75a2ea00-5346-4281-acfc-87baaf930c7e/ma_rosa_download_movie.pdf
    • https://uploads.strikinglycdn.com/files/cf1d7bd5-53c8-45da-8595-5f6c532e1400/rank_size_rule.pdf
    • https://s3.amazonaws.com/zuxadol/articulo_de_opinion_sobre_las_drogas.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceb3.bin
6e061fd74d6d51580f5d3ff37daf05c4648ba131e412620f7f1e4bfc68a598bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB3 5224 bytes
font_01_sfnt_off0000e07d.bin
c0868f117acb9c35c0427a170eae6df9cbac6d10312de01b8d219b3e8c0dbb53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE07D 10968 bytes

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