Malicious PDF — malware analysis report

Static analysis result for SHA-256 86bee85c9ed13ec6…

MALICIOUS

PDF

37.2 KB Created: 2020-11-09 13:59:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5a48812b6b101b9a4fa04267a6534b41 SHA-1: d7f7ef80592ad522514a236c4bcfe74b5104691f SHA-256: 86bee85c9ed13ec6a4c81bc604e502d7cc60722a81a517739f2ff499a54f39ef
94 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 an ML classifier. 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 1.0000

Heuristics 3

  • 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.
  • 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://traffmen.ru/123?keyword=lifepak+cr+plus+aed+manual In PDF document text
    • https://rowagikej.weebly.com/uploads/1/3/4/6/134678960/mefivog_nabozovefamexi_gafumenaki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416653/normal_5f94eb9314152.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379959/normal_5f9524dfd3adb.pdfIn PDF document text
    • https://seroselek.weebly.com/uploads/1/3/4/6/134636573/2179531.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/fdf17a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5f9c132ed1e2d.pdfIn PDF document text
    • https://zozelezike.weebly.com/uploads/1/3/4/4/134434207/7aacbc5df35.pdfIn PDF document text
    • https://voledobaseju.weebly.com/uploads/1/3/0/9/130969813/989975e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376357/normal_5fa81296bb453.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/6db7b32b-0aec-404f-9afa-8ac6b40dff40/tatefopexo.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_off00005120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5120 5308 bytes
SHA-256: c4d6a515119106472ec3cc2cc8f11bcfca4b8fecb3ce011a39bb336d96fbb690
font_01_sfnt_off00006322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6322 10916 bytes
SHA-256: 516413c7ad9ef62a16715eb58d21cc9ea8f1239976a72b04582512531574dc2e

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