Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e76be7ac93eacf…

MALICIOUS

PDF

74.2 KB Created: 2020-11-10 10:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 06f9dae03f7bbab8a348fc6d5178e1fa SHA-1: da180a63d0bd5d552d74199057e7d3150dfbbad3 SHA-256: 94e76be7ac93eacf859734f6df954c467b00bf9f3a8524e54b0d4fa7bdd46ba1
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 0.9553

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://trafffe.ru/123?keyword=repelis+50+sombras+oscuras+de+grey PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414847/normal_5fa1e7cfe476f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377128/normal_5f9d626d1dda9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392439/normal_5fa7e2c2b9417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f9123144b582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404750/normal_5f972036f3e4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0694f42a-a3ec-4edd-bd42-4c17ec631a3d/ruzafifumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dcc3f7d-918b-41ff-8ac4-df7b809e148e/4664044816.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/martin_jaguar_recurve_limbs.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3E5 5604 bytes
SHA-256: d59f82634e6e422ced44b167f7f60ca4ee2d09efd23a1f5a86c216aa0f7d3304
font_01_sfnt_off0000c6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E5 2444 bytes
SHA-256: daddd71e57f18167be33385c99d600a6c094106a8bb576829ce1663a30ecfe30
font_02_sfnt_off0000d1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A9 11228 bytes
SHA-256: 56dcd73a40e8c861260056bd90b2444ad2c5178af840f68dcd4b697d2a78894c
font_03_sfnt_off0000f6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AB 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
font_04_sfnt_off00010bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2