Malicious PDF — malware analysis report

Static analysis result for SHA-256 219cc98dee107205…

MALICIOUS

PDF

41.7 KB Created: 2020-10-30 12:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: cbd85abf9780e08397afc7fc4004e087 SHA-1: a02997158c8b7ecee5de12e7582beadb4135b258 SHA-256: 219cc98dee107205e4b47409768cdb146a1a09476305ca623a96e0b333c5eaae
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://ggtraff.ru/strik?keyword=arabian+horse+rdr2 In PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/6082316.pdfIn PDF document text
    • https://rukazoxet.weebly.com/uploads/1/3/4/0/134040508/tuweno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5f8e7eff49eb1.pdfIn PDF document text
    • https://nasotatuji.weebly.com/uploads/1/3/4/3/134392375/4447466.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/2183818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369779/normal_5f8d97b9174ad.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006436.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006436.bin)
    • https://cdn.shopify.com/s/files/1/0502/6873/3634/files/largumentation_dans_le_discours.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/40317307259.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/molecular_biology_mcqs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53af5915-b85d-4c49-b27a-337f7e77539b/miwutajawobosiwuvalajo.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/jurnal_biogas_kotoran_sapi.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/edit_text_acrobat_x.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/aviation_risk_and_safety_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/838ebc16-6369-4e25-a4ec-dcb428862220/manual_dodge_nitro_2008_en_espaol.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_off00006436.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6436 5140 bytes
SHA-256: 8e7e4ec443b2e53bdf210bf734dbf41236d36a901e0ef9c6e1d2161294801a7c
font_01_sfnt_off000075a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A2 10780 bytes
SHA-256: f114b48342595b37e0dbb4d842a3f7ded6128e432cee3a5c5d7606ed678ef661