Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa86964be29d2ad3…

MALICIOUS

PDF

47.7 KB Created: 2020-11-07 01:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: ec485d114287983a8a0d8337b9cfcfce SHA-1: d7ce53e4bdc27320160d3756d725691adedddb4e SHA-256: fa86964be29d2ad3e9376c6e66864f323ad8c0bfcbf7fc9b961dafa3b438c783
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://traffine.ru/aws?keyword=secretariat+preakness+stakes In PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/posubuxapeb_fufivito.pdfIn PDF document text
    • https://woliwejimagevin.weebly.com/uploads/1/3/4/3/134319070/8482051.pdfIn PDF document text
    • https://vujofuda.weebly.com/uploads/1/3/4/3/134375628/tedanibusamumusida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5fa5d22b54d96.pdfIn PDF document text
    • https://xizerusepu.weebly.com/uploads/1/3/4/3/134308384/minot-gaxedireg-relinonujumo.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/9181155.pdfIn PDF document text
    • https://gobumireg.weebly.com/uploads/1/3/1/3/131383916/3165759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403681/normal_5fa2843d3cf6a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/43325634586.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ebe1a24-dd41-4b52-9495-d25592354340/silent_night_piano_song.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/accel_world_light_novel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/373c0575-a7c3-4839-8b1b-eb7040b99395/18644041388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ae4c889-51ac-4aa0-a37c-dce29cc5bff9/tagosutowunuxuv.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_off00007ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC0 5064 bytes
SHA-256: a72516f5ca782fa381cb2381a09bc70fbb910435c6c2d386a9a7eb4f459aed2a
font_01_sfnt_off00008c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0B 11208 bytes
SHA-256: a2e95d7dbac6964d5cc6aed635192dec2ac4ded5e3b75692258f0ed4152e6a3d

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