Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b3a13b4a59931a…

MALICIOUS

PDF

69.3 KB Created: 2020-11-10 21:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b4c540f4d55773315b37d9a0cfba8e41 SHA-1: 914b4452c1a6d77d9ceb5de6a335c313e7b3e8e8 SHA-256: 68b3a13b4a59931a2f3c48269e654f14d9b24d2b53258894b813b653229760c7
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffmen.ru/123?keyword=bad+intentions+lyrics+ft+migos In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374978/normal_5f9197209fbc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5f97a518e1f9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_5f9d4ccdf2248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f9a20a5eb512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413980/normal_5f9d57f737f11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378628/normal_5f8fc145315bd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/51001223-b1a7-4d44-b39e-6d80d26021e6/clash_of_clans_apk_free_shopping.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20a4d1ba-c468-41d5-a8ef-818ae42915cd/wikikibabileteted.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/92471098875.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/words_with_cvvc_pattern.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/disejulewazuridujef.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/mrt_workbook_answer_key.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_off0000d0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A9 5492 bytes
SHA-256: 15bfe9d6156b549af5a112804cbaece2b44b1146ae71e4b378115d6f832609b0
font_01_sfnt_off0000e34d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34D 10644 bytes
SHA-256: d5e27006de725810724bc225eef38d0656509b75daf7ff2bfba293d30d9c4f01