Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea91fa54f28ccc4b…

MALICIOUS

PDF

192.9 KB Created: 2021-03-06 14:27:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c2204fbea45514fd3284bba3cecfb3fd SHA-1: 5a94f46a6ca96219d311a1ae09aed59b078cffa4 SHA-256: ea91fa54f28ccc4bdd2b64f6b3608ee8b6b6d99b2e94f96668903ffd60802fbe
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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 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://botokaw.ru/123?utm_term=what+words+end+with+lly PDF link annotation
    • https://xaforegitada.weebly.com/uploads/1/3/1/4/131413040/94024b692ad5a0.pdfIn PDF document text
    • https://cdn.sqhk.co/duzixulok/hdhhTAE/is_kiki_s_delivery_service_coming_to_netflix.pdfIn PDF document text
    • https://cdn.sqhk.co/lazuxorus/fNgeegc/tatibixodimipomuzapijege.pdfIn PDF document text
    • https://lalinixew.weebly.com/uploads/1/3/4/2/134265361/9e143f538.pdfIn PDF document text
    • https://sixalusizefew.weebly.com/uploads/1/3/1/3/131378898/e78c9e1.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/didgKe0/40687546313.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/uDao9ii/epic_conquest_2_trailer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_603bfc2747827.pdfIn PDF document text
    • https://bisebisa.weebly.com/uploads/1/3/1/4/131406118/ac87b2f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393898/normal_6023fb3f8c14d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462986/normal_603e2dc9883b2.pdfIn PDF document text
    • https://zoxamadafipezo.weebly.com/uploads/1/3/1/1/131164297/tukobowivupive.pdfIn PDF document text
    • https://cdn.sqhk.co/pumopivosoba/ichagci/global_citizen_year_annual_report.pdfIn PDF document text
    • https://bobazuforabi.weebly.com/uploads/1/3/1/4/131452976/7971730.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464313/normal_6003a6c483ce8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409122/normal_5ff945bc546b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424405/normal_60121ae8de254.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/e97753a1-2e9b-4e27-8520-1f1539b9ecf1/how_to_fix_ignition_lockout_on_boiler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ecb5dc5-1885-4100-810b-cd426b7fbc1b/how_to_factory_reset_hp_pavilion_dv6-3225dx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c147417-a611-46c0-9bde-69c5cf58d15a/26080888585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52c16347-cd2e-45fe-bd38-312d2766a026/tiwewidotorabenewugob.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_off0002bd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD07 5120 bytes
SHA-256: 2f092f42fdded90fe86d8f48f20b2c66565ad49ebd1e1f1011e96a2f18715c81
font_01_sfnt_off0002ce83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE83 11608 bytes
SHA-256: 67f40e5d9cbe31b50b8deed4a23cd240a3d9043515246133d81349db6fe30c91

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