Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2082990862796b…

MALICIOUS

PDF

37.8 KB Created: 2020-11-01 22:15:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 186f6d00d42d9079bcdd7dbfa7df0aa1 SHA-1: 1bf5ca64353c03119033a4b175a784155ef35142 SHA-256: ff2082990862796b37f1b3601cddeec01a6a8cba71053f1fcbc6c156df225117
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass of external links, including one pointing to known malicious redirector infrastructure at 'ggtraff.ru'. The document body, though heavily obfuscated, contains URLs that suggest a lure related to promotional offers. The presence of numerous PDF links indicates an attempt to distribute content or redirect users to potentially harmful sites.

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 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.
  • 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/123?keyword=walmart+promo+codes+online+orders+august+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4389582/normal_5f909673e70ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374372/normal_5f894e962ae0d.pdfIn PDF document text
    • https://mavipevawifuduv.weebly.com/uploads/1/3/4/5/134598931/libizuvitogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f8c196d5787e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5f925a784811b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387590/normal_5f8d2be542076.pdfIn PDF document text
    • https://kudumegowejo.weebly.com/uploads/1/3/4/2/134266354/4600766.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/7151589.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5f8bdc87146a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414488/normal_5f98722b19d12.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/kafatigemifibexor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385859/normal_5f9155dd029b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426941/normal_5f9a90ad46305.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d289d559-d0db-4946-98ab-374527fc92c0/macroeconomics_midterm_study_guide.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_off00005385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5385 5680 bytes
SHA-256: f1afff5939c6f903b0b54b24eac71bbd76755036a5b8bf40c7705f7b0fddc469
font_01_sfnt_off000066d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 10416 bytes
SHA-256: 3857c5cfcd27a880ff5f07c5db249fad289bf8f8981334dc9b73e7b1c971f326

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