Malicious PDF — malware analysis report

Static analysis result for SHA-256 869e7e17320e8bd4…

MALICIOUS

PDF

77.0 KB Created: 2021-02-18 13:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8686b72da47f81ea8b356b5dd29501b6 SHA-1: 3afe89122607aa51a7eace33a37bf6d171e35aaa SHA-256: 869e7e17320e8bd44d06522be663e40c769274a129da0cf29f6a28cb2ec6f6ad
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://maypoin.ru/123?utm_term=konica+bizhub+c224e+default+admin+password PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489853/normal_5fc677083ef7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375908/normal_5fc85b191e182.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413846/normal_6012ecae249bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427273/normal_600109ef493c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374847/normal_60140255760dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445871/normal_5fe94115f3f05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491669/normal_5fe16bce6bc2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413374/normal_5fe814074a71f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414680/normal_6007aba99f01a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417025/normal_602413ef32f0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501364/normal_602656a2142a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471710/normal_5fe2480b632fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380881/normal_5fdc172fbe8b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384469/normal_602b0066d8101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365536/normal_5ffe00531d9a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407303/normal_5fffbd25ab72a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zulorokufejepa.rf.gd/digedas.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_off0000edf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF7 5864 bytes
SHA-256: e9f45536a6166bcd5334552750198dafee6969bbc7438fae68c69d7e20d0791c
font_01_sfnt_off000101eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EB 10740 bytes
SHA-256: 9e04e1cc8831fec44e5daf4668fcaeb77638efeb6b4f60f17699dbdf4a13af23

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