Malicious PDF — malware analysis report

Static analysis result for SHA-256 7085c0b7b610e68a…

MALICIOUS

PDF

81.5 KB Created: 2020-12-01 03:24:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 80f1f5f0f8e8edff453c61c81d60ac3b SHA-1: ba4da4395e04431e74d5b89c798176adaa824c45 SHA-256: 7085c0b7b610e68a3905f7530c2be8d83842be08008082e2c8f85e4893a39c0b
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 0.9997

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://traffset.ru/123?utm_term=best+space+opera+books+2018 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411219/normal_5faaf09134038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f9b2ca5e240a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f9a67f939214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f8ddf3cbfd53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487419/normal_5fc06087ebca8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5f925f6261112.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465263/normal_5fb77eea7bc28.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/d05c649a-9262-4687-b59d-8706ce21fc8f/bella_and_the_bulldogs_cuckold.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/63374525292.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf607fa97599144eef238f/1606377599490/99535015619.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/19414477102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/487f475c-ca95-45f2-b1dc-f524ee1c1b01/9812176268.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/7566159518.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/ffxiv_cul_desynth_guide.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_off00010049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10049 5668 bytes
SHA-256: 17476782468ab711d4a20db963c2c3607082f454a1cf4d07ce047fa8a3e2b284
font_01_sfnt_off000113a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A0 10648 bytes
SHA-256: dd1a1fe86b0ac54c5f71367d20187d1632d8060722c53ea079b7a40862318bcf