Malicious PDF — malware analysis report

Static analysis result for SHA-256 c69535ed93ffe198…

MALICIOUS

PDF

261.9 KB Created: 2020-12-28 21:14:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b30159214117d8a20961099dcb9b4a67 SHA-1: b93f44d8ce085bef1f80b24772b76593a07f4102 SHA-256: c69535ed93ffe198b5a56ff40eadb6409b15317dadf9e9106c144074890ca952
162 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. It uses an urgency-based lure. 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 0.9946

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/aws?utm_term=esc+guidelines+ua%252F+nstemi In PDF document text
    • https://cdn.sqhk.co/kufedefivuvu/cfgidJL/island_packet_for_sale_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/fasixazijaz/dtAogeg/nitizizitutibumarofune.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/kupegisew.pdfIn PDF document text
    • https://natagudere.weebly.com/uploads/1/3/4/5/134526504/fujufogut.pdfIn PDF document text
    • https://xasotuda.weebly.com/uploads/1/3/4/2/134235861/gikatu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5fa67ae0c50a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vexeliku/bomag_bw120ad-_5_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/jigofefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94b3ec62-3222-4961-8eed-b3be3dd15b04/divisiones_6_primaria_tres_cifras.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/35760196143.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_off0003cee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CEE9 5156 bytes
SHA-256: ddd2c7b2615be11612f6bc19d7ee43d04fc3148a41284e57adbc36571e6203ae
font_01_sfnt_off0003e070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E070 12776 bytes
SHA-256: 89fe9d71759bac942ec5a36a384f1b17902f3f1cd12bd39abaaec0b284ec02a7