Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c4137bc597da07…

MALICIOUS

PDF

70.6 KB Created: 2021-02-28 05:00:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9229b7eacdf880fdd451bd8bd427c79b SHA-1: 12bf80ee66b7695c63f232c139ac3aae1f214ccb SHA-256: 80c4137bc597da0780204f333b22e55ad7e4e256dd4f66ddc15ccbbeee046ca3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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://dugedepap.ru/aws?utm_term=bulova+precisionist+gold+tone+diamond+men%2527s+watch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415081/normal_602b421dbe4ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453719/normal_601cddffe24d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417817/normal_5fc9dfd74863c.pdfIn PDF document text
    • https://cdn.sqhk.co/luwukamuku/gihCid5/18382153838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_602ec5b550618.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481423/normal_600017609aec2.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/tabela_de_frequencia_estatistica_exercicios_resolvidos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497368/normal_5ff6c7af9b090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_600f4d0839fcf.pdfIn PDF document text
    • https://cdn.sqhk.co/kagixepo/Dhfjbha/zitorobun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488102/normal_5fd927e14f4c7.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/niagfji/59334320462.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495058/normal_5fce2b7ac6282.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_600fab56b2e79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421788/normal_601e3a5d84b6f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://konugatevokaxot.epizy.com/block_website_app_android.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_off0000d0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A4 5720 bytes
SHA-256: fa8f171e5e79e338edc8e0fac74436496722bf4fe45407e3cdd5cc157ed77d06
font_01_sfnt_off0000e407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE407 11876 bytes
SHA-256: 301652db93a272590f6be1db8232bed40d318d57f31fcf2d8fb0e655e757ae19

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