Malicious PDF — malware analysis report

Static analysis result for SHA-256 33bacd4f6f2422a4…

MALICIOUS

PDF

72.0 KB Created: 2021-02-19 03:41:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3d76f44814199f4f41ce0ba2cba69da6 SHA-1: c9010025a5c188996184827c0edf613609a208c1 SHA-256: 33bacd4f6f2422a4289834e2091c97e8b087dca4f4c45c70dd774ddb0294b3d4
186 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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://ragulifogikub.weebly.com/uploads/1/3/3/9/133986704/tenize-niliboz.pdf.
  • 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://jottigo.ru/wix?keyword=bdo+turn+off+crafting+notifications PDF link annotation
    • http://wupofifaxixusi.66ghz.com/teleperformance_jobs_edinburg_tx.pdfIn PDF document text
    • http://padulima.22web.org/42604265186.pdfIn PDF document text
    • http://omoikiri.info/deposition_errata_sheet_form9682y.pdfIn PDF document text
    • https://ragulifogikub.weebly.com/uploads/1/3/3/9/133986704/tenize-niliboz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407062/normal_5fe796b82997d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462727/normal_5fcca6f11d85b.pdfIn PDF document text
    • http://lixakux.22web.org/66354293306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457854/normal_5fd5fa47aaaa8.pdfIn PDF document text
    • http://wafenov.iblogger.org/limatigenubug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gemakeruw.epizy.com/sadeja.pdfIn PDF document text
    • http://masosoxejonejov.rf.gd/answer_sheet_csoc_sample_questions_set_3.pdfIn PDF document text
    • http://dakawarinuku.epizy.com/uc_browser_free_for_java_mobile.pdfIn PDF document text
    • http://vowafipefazasex.epizy.com/mupajedirajewelogujadozo.pdfIn PDF document text
    • http://teguzudimotu.epizy.com/wikij.pdfIn PDF document text
    • http://kiwutixukunow.epizy.com/fujovupubonuwebebefawe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAF 5204 bytes
SHA-256: 4f9e1286de8d3423bfff000e04625df5c586868002082682c378f6d90c413fb2
font_01_sfnt_off0000e171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE171 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000e9fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FE 12224 bytes
SHA-256: 34671a415046a252e6be6ab9c240f6e81a94cb2b1876a7b29885ff0ff42afa22