Malicious PDF — malware analysis report

Static analysis result for SHA-256 cea6a9d3f27b26f4…

MALICIOUS

PDF

66.9 KB Created: 2021-02-14 10:13:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 94931f8df65b2ac0ce9b5a3e14d015c0 SHA-1: ec5d54fe10257dc342d435988dcc5017fd43a88d SHA-256: cea6a9d3f27b26f41256198fa9b18224b25f79f0a4ed53e4fd6dcd0d821d8c22
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 URI pointing to a suspicious domain, suggesting it is designed to redirect users to a malicious website. The presence of embedded URLs and the nature of the detection indicate a phishing or malware distribution attempt.

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://jottigo.ru/wix?keyword=pep+mp3+pro+apk PDF link annotation
    • https://cdn.sqhk.co/mifigatira/geTFidK/lolevujevawiruno.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407102/normal_5feb87f6536c8.pdfIn PDF document text
    • https://cdn.sqhk.co/kogeledewafo/Z4giGia/transfer_content_from_android_to_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467912/normal_5fe266db7254d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445338/normal_5ffc01e56e7f8.pdfIn PDF document text
    • http://redpandarecycling.com/mogulifisanabefuz0hyvb.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/giShijb/11989911879.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410679/normal_5ff8efccc0555.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://s3.amazonaws.com/betefowubevat/83233753809.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/minimalist_logo_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/free_blog_templates_bootstrap_4.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC040 4536 bytes
SHA-256: 981cdc78e1376a552141001a8b284aa1dc4b4661b6e678f45d1827fa4e988a0e
font_01_sfnt_off0000cf9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9C 9872 bytes
SHA-256: 92a29e3a1aef0c4206028d281295ef2a8e120a0a6efce16b780fe7086e63f6d2
font_02_sfnt_off0000f185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF185 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f