Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f500c334665099…

MALICIOUS

PDF

80.4 KB Created: 2021-04-13 21:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 95f4cf64ecf883fcc096e18e256f5c7d SHA-1: e7f023c9c3a0205bc642fb4ac2c459605b026468 SHA-256: a6f500c33466509933306d0d403b47e008f706f11f153be1261b084a58d8ce98
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=what+is+the+aim+of+health+psychology PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453560/normal_6026f63be2166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_60304128983fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451045/normal_600a29f9ab284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477637/normal_6053b41c92598.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379498/normal_5ff6209e6e712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402294/normal_6020bd755289d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402246/normal_605f5f1e7125f.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/jiKGib7/buvanob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476146/normal_602fff891f17e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479439/normal_60415f76af6ba.pdfIn PDF document text
    • https://cdn.sqhk.co/gugosobor/mwcljjw/63924529359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_6029c3a498c3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451368/normal_605315a46d3b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486984/normal_6065c6cbc3e59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374853/normal_5fcb28c9ed7c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369502/normal_5ff2af0a212f8.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/hiidjeq/95410781949.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475212/normal_6007b9c232b5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446270/normal_601d6f004639e.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_off0000fcfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFA 5448 bytes
SHA-256: f69627b115b276e10b245347d8717417e9d27f93d5661df74a81ee373d579085
font_01_sfnt_off00010f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7E 10792 bytes
SHA-256: 8bf6e6ccf5fe047b06f83b518efe17569b7d724be44146a21c6bd6cbc0ee32b3