Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b203f6c10c73ef2…

MALICIOUS

PDF

65.3 KB Created: 2021-02-23 15:30:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ed12386809f8bc3dda2c635e8ac91bbe SHA-1: c75156f97a9bba69d121ae73706c8538b2a8627f SHA-256: 1b203f6c10c73ef23980df617da31e0eeb11d2952141622af4743a586f7ad304
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/wix?keyword=beats+by+dr.+dre+powerbeats2+wireless In PDF document text
    • https://wanomumopanud.weebly.com/uploads/1/3/1/3/131379193/1981941.pdfIn PDF document text
    • https://cdn.sqhk.co/ninubisidire/igcgixI/43857179771.pdfIn PDF document text
    • https://labopepiw.weebly.com/uploads/1/3/4/7/134747507/winaf.pdfIn PDF document text
    • https://wifamiwipefap.weebly.com/uploads/1/3/0/7/130738562/6623480.pdfIn PDF document text
    • https://mevuponepom.weebly.com/uploads/1/3/4/8/134899748/9062146.pdfIn PDF document text
    • http://pegajopakazo.22web.org/scimago_institutions_ranking_world_report_2014.pdfIn PDF document text
    • https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/54251.pdfIn PDF document text
    • https://cdn.sqhk.co/zokoxirinuz/rtiejja/vebemaxotox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://velawomonoxejuz.epizy.com/isometric_dot_grid.pdfIn PDF document text
    • http://nopilumelew.rf.gd/fosapokuw.pdfIn PDF document text
    • http://fatebem.epizy.com/dojofi.pdfIn PDF document text
    • http://botusojulepeja.rf.gd/pomojuluxowama.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_off0000c049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC049 5500 bytes
SHA-256: 3c2aec4b556b887eb4863e1e844245d03fc07fae0c1dd9740e8d0a410fc8df41
font_01_sfnt_off0000d324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD324 10572 bytes
SHA-256: f01d7143d1d7171b5debbb562b05b4c128f54ecf651eba3b1a1aa099396af09a