Malicious PDF — malware analysis report

Static analysis result for SHA-256 5007675e424966e4…

MALICIOUS

PDF

94.3 KB Created: 2021-05-21 23:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9b7c0e9e213d406851bfe82faaee8e90 SHA-1: e811b5676d230809caac93e76102866b6df68691 SHA-256: 5007675e424966e40882fd43c3d4c1981c903d99df3206357160d9e5ed51b0dc
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 0.9998

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://gimoguvi.ru/strik?utm_term=6.4.2+energy+transfer+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408586/normal_601f2f3c1df22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496815/normal_60016d23b7737.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418584/normal_60011ed61856c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404727/normal_601ec4b27effa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445889/normal_604aee5ebc594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380383/normal_606e8be21c0e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475000/normal_604bb68d78b9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412592/normal_6020d2ae88a55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420014/normal_5fda870a0da75.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/97e8f820-4c3d-460a-a966-6bd39e84494b/14504150883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07f95871-cb8b-45c3-8c90-790477fdd0cf/74573760687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ae3268-9a5f-4b78-b96c-a1330c5163a0/nexokidogebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d45aaf92-b6a1-4c6a-baa7-28f922ff4964/gedaniweveluwawada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc9cc9c-673b-415d-b634-fb2845c4e976/78432179990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87e11570-3981-4f29-8ff9-2f187a4037dd/daloxifodemaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00c70410-a7de-4f64-8c58-9cc48eedb970/how_to_charge_my_smart_hrm_bracelet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1a9356e-30d3-4218-8f6c-1c7412f9aa30/the_book_thief_film_characters.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_off00013236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13236 5568 bytes
SHA-256: 5d5d0d607b9b7ecdc63d66497e058ef50ba35504b140fcf765d9a2e6adf8ce0e
font_01_sfnt_off00014556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14556 11308 bytes
SHA-256: 19d800b90e11c268b7361002b2a7d407889406c2207c3e737144f187ae6d41b7