Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b9fe953fc3b9be7…

MALICIOUS

PDF

49.3 KB Created: 2020-10-25 10:39:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 10549ef5b3a9efccd2ea64b7400e8092 SHA-1: e40d0d625cf61ada91099ec90cf1bdec3e4d507b SHA-256: 5b9fe953fc3b9be7da634ae30535a0e1f7dc1c3ae226ab016cbb5aec1f7582b9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.link/123?keyword=steyr+pro+hunter+owner%2527s+manual In PDF document text
    • https://gaxopekel.weebly.com/uploads/1/3/0/9/130969853/pibutigejapejowade.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/43acedf1fa49d5b.pdfIn PDF document text
    • https://kikuvabafot.weebly.com/uploads/1/3/4/3/134332304/8688271.pdfIn PDF document text
    • https://dotigima.weebly.com/uploads/1/3/4/4/134404546/ganot.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/wusipelive-novanazenet-rapew-vepuladotekag.pdfIn PDF document text
    • https://pivuwexigika.weebly.com/uploads/1/3/4/3/134320842/saloxenebozenubobeti.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/xolodub.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/vibururodiz.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/gomedelep_joviwoge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368245/normal_5f8e60f9584f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_5f91d28422fb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f8a8e4cd1422.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381081/normal_5f910c2ca7495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405414/normal_5f91c5633be16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384470/normal_5f8f4fed04fb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f92f7e65f4c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_5f8a0aa010f42.pdfIn PDF document text
    • https://gaxopekel.weebly.com/uploads/1/3/0/9/130969853/2566330.pdfIn PDF document text
    • https://wojawafelufofux.weebly.com/uploads/1/3/0/8/130813934/8431864.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/sexokijaxelatidozo.pdfIn PDF document text
    • https://jejoduruledeg.weebly.com/uploads/1/3/4/3/134396934/d69e2dd255.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006fad.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006fad.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a8fc.bin)
    • https://uploads.strikinglycdn.com/files/e48ed28f-59d4-4b40-b78c-1bf02bbcc8d1/loxeluxofij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b6a3bd-817d-414b-8c4c-31c3b34f164d/favodifazemevax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72855c53-c5e0-415d-87aa-1e6ae35b00b3/kopufifozusuvim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13f380d0-f0f6-4ec8-8e37-1651a429102c/too_many_tamales_story.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 extracted file (font_00_sfnt_off00006fad.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAD 5224 bytes
SHA-256: 00af983d54fed378a5162c76498e4642171b156e8b126c27d9cc01a25007f5a4
font_01_sfnt_off00008151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8151 11756 bytes
SHA-256: f82895b3011298f89b67c27d5c4d6c1e4083ddbd449d0dc3878e9eeb2ec18936
font_02_sfnt_off0000a8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8FC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34