Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ee7f0dc479e24f…

MALICIOUS

PDF

79.5 KB Created: 2021-04-07 00:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 2d132f9f106ae8e57a3380eecceeae4b SHA-1: 4c3124deb981a1bf8effab6a6d59091b86c6c486 SHA-256: 11ee7f0dc479e24f22bfa02cf0a10235195597295ef7744d430a4ddab349279e
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous URLs point towards a phishing or content-luring attack pattern.

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/award?keyword=espresso+english+podcast+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461511/normal_6002a7aa9ba62.pdfIn PDF document text
    • https://bodizolisasutez.weebly.com/uploads/1/3/1/8/131871954/271199.pdfIn PDF document text
    • https://tipirigemiwar.weebly.com/uploads/1/3/4/0/134016889/laratabilalapufujupu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407810/normal_5ffcfa03949ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496402/normal_601bc8ac85f03.pdfIn PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/9902839.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421969/normal_5fdc3770bc8aa.pdfIn PDF document text
    • https://jovinafunen.weebly.com/uploads/1/3/2/6/132695325/6b4b2a1.pdfIn PDF document text
    • https://gunanase.weebly.com/uploads/1/3/4/4/134488627/966641.pdfIn PDF document text
    • https://dadekubezaxinis.weebly.com/uploads/1/3/2/7/132740399/6963785.pdfIn PDF document text
    • https://nazorokofewedu.weebly.com/uploads/1/3/2/7/132710677/davamisakuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f9c380c0-3c9a-404e-8c76-a924832b335c.filesusr.com/ugd/9c8fb9_9273b1d331ca4ad497b034b41392a696.pdf?index=trueIn PDF document text
    • http://nusorilafezevi.rf.gd/story_of_seasons_guide_klaus.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/indian_criminal_law_books_in_tamil_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/yaesu_ft450d_accessories.pdfIn PDF document text
    • https://804b95bc-9ca4-448d-a094-5a8e1ff69a26.filesusr.com/ugd/99d1da_5d910d35e7684ae081880192903e8984.pdf?index=trueIn PDF document text
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_4187773d87fc466d8bcf1ebfbc227c4d.pdf?index=trueIn PDF document text
    • https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_6121f7fe196d41d1ae18941389be905c.pdf?index=trueIn PDF document text
    • http://muravurut.epizy.com/rewazadesomojesasefi.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_off0000fa28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA28 5376 bytes
SHA-256: 03d6c1cdfbe31d161d3745635fc9065107c436db1a1ff7d4bb60672143ab2e74
font_01_sfnt_off00010c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6D 10872 bytes
SHA-256: b6f2598da4c2d27e5c6ac89f51d1aa64735455f632ac4a459efb85a2aae8a539

Open this report in the interactive analyzer, or submit your own file for analysis.