Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a0563329c2e074…

MALICIOUS

PDF

67.1 KB Created: 2021-01-20 00:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8d79e68882869a5686a819477b439c5e SHA-1: f8d6770bf8e95d01971c4ef330617db174ee5338 SHA-256: c0a0563329c2e07466257af5e721c382dba3dd92cbc528fd089fef82563636d8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'baarspo.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure designed to trick users into downloading further malicious content.

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://baarspo.ru/wb?keyword=dj%20tiktok%202020%20nonstop%20offline%20download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f8e57e429b00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367299/normal_5ff81b42391d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410432/normal_5fdd5b18e2c28.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/ijgjhgi/kolodejatizerosurazebiwo.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/jwWYFha/capitalism_a_love_story_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/gobisurav/gjAhajj/brain_games_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vilomikov/cidicii/bufegivuvovebu.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/a09xhc3/fisototixarudazukezuwirit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5fc373820a56a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392453/normal_5ff49bb294051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450430/normal_5fd73330dd74f.pdfIn PDF document text
    • https://cdn.sqhk.co/mojupesonon/twhgUuh/feteg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93E 5444 bytes
SHA-256: 8646212dc8b25e3c89b7fdd2dd5492c57aca98062dbac3bce908aee5655d48d7
font_01_sfnt_off0000dbfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFC 10472 bytes
SHA-256: 423de8a92163b07793a4d01e5cccb2b0fc31d7394b653dd6fa00a9c6317f0ebf