Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a9bc58deb49c5c8…

MALICIOUS

PDF

43.3 KB Created: 2020-10-03 13:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6eb81cc73316acd1d34448c4da4400d1 SHA-1: 669bfe2912d0d36fa069386278e8b5030121bfc1 SHA-256: 5a9bc58deb49c5c8a6e1fa574288641ec84f7f370c926b086effee2bb55527b7
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/strik?keyword=jim+morrison+the+lords+and+the+new+creatures+pdf In PDF document text
    • http://files.jamesmatthewwilson.com/uploads/1/3/1/6/131637057/d1e23bb.pdfIn PDF document text
    • http://nexivo.dyerlakenewfoundlands.com/uploads/1/3/1/0/131070806/3963410.pdfIn PDF document text
    • http://deruk.cherylnewmanmd.com/uploads/1/3/1/3/131384714/sugizixidowegasasas.pdfIn PDF document text
    • https://site-1038503.mozfiles.com/files/1038503/forowejavuwilodokasu.pdfIn PDF document text
    • https://site-1040096.mozfiles.com/files/1040096/jibowajemutijurukidumo.pdfIn PDF document text
    • https://site-1039553.mozfiles.com/files/1039553/vopegasokusesogezuvasixu.pdfIn PDF document text
    • https://site-1037111.mozfiles.com/files/1037111/zesugutozaxeliwitu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8836/6756/files/modern_texture_pack_for_minecraft_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0646/6976/files/honeywell_chronotherm_iv_plus_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9602/2933/files/xilizikipemos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3451/2040/files/30693169600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7793/8583/files/75385690820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0762/2817/files/zewobukakug.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC7 5360 bytes
SHA-256: 2fc7b35772c695cb1578725cce7e288ad8e8f89d2688e85643a865b9c0e25166
font_01_sfnt_off00006edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDC 10320 bytes
SHA-256: eb850ea7cb3470e1f6fce0699afab248232640a595af67e12942021e2ecc3f66
font_02_sfnt_off000091d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D6 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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