Malicious PDF — malware analysis report

Static analysis result for SHA-256 6130ee08b9a1d6c3…

MALICIOUS

PDF

78.1 KB Created: 2021-02-19 01:15:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 964483fa3cab5cdb3690f4db2c3b4ccd SHA-1: 1941579dc7c5c6c30d2ec726b93eecf6c4a8b0b6 SHA-256: 6130ee08b9a1d6c3153af0ae8c52c22664fb02ef25bd0f7a3e54fa7ecd1fe759
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to potentially harmful content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit users through deceptive content.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/aws?utm_term=happily+ever+after+kiera+cass+audiobook+free In PDF document text
    • https://cdn.sqhk.co/fuzomorikat/jhheVjg/epic_minequest_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/nijedesakuj/hanijhf/57055663055.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393026/normal_60068ed016a3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479439/normal_5fd701ebca7e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450730/normal_6007a41328b16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_60292fa582752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413585/normal_600d7aaf47281.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/cUpFchb/zuredofu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372987/normal_5fcd42a3cd1f6.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/bitajemisajoz/butterball_turkey_fryer_cooking_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/best_type_of_red_wine_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/kazarasuvukewapeki.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/my_talking_angela_apk_mod_latest.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/msds_sheets_owens_corning_fiberglass_insulation.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/best_beamer_presentation_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD671 5476 bytes
SHA-256: 78401dcda02b83d9ac80a75c1dc64f0d0613b9e05b8f02450e22ebb8e5840bf3
font_01_sfnt_off0000e927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE927 13012 bytes
SHA-256: 7b221fa411842c42b894dc6e39ded3a6779c417372e44a0a6cde58c59d5b680f
font_02_sfnt_off00011584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11584 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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