Malicious PDF — malware analysis report

Static analysis result for SHA-256 654e2b97c89b1faf…

MALICIOUS

PDF

72.2 KB Created: 2021-02-11 19:14:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6998c5f25a262e641d60130a4bc86784 SHA-1: 9d95f70e5eb80c3ccd3c77f5c9dac7d76e6a8e67 SHA-256: 654e2b97c89b1fafe54e2e93c19aa1ea3b2c6e577d4ed74223bee220674da16e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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://yafferge.ru/wix?keyword=dna+worksheets+for+elementary+students In PDF document text
    • http://jadusugogawal.iblogger.org/bbc_bitesize_ks3_ict_spreadsheets_revision_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_601c95bf24a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375341/normal_60167f6bc3990.pdfIn PDF document text
    • http://fiselijuduguge.iblogger.org/carbothane_134_hs_product_data_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451221/normal_5fdc839865e41.pdfIn PDF document text
    • https://lomamunapud.weebly.com/uploads/1/3/5/3/135315780/bazuguji-tulanolaw-konemakibuk-suzinipenetatig.pdfIn PDF document text
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/jijojitegejosil_zujeperexuluda_wejivoxazaxurog_selozone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485703/normal_5fd074765d2be.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/hjUIieo/7691552709.pdfIn PDF document text
    • http://neroveruturom.iblogger.org/12087610912.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mapulikilep.epizy.com/joined_matrix_report_salesforce.pdfIn PDF document text
    • http://suraweko.epizy.com/wiparesejikapod.pdfIn PDF document text
    • http://lamekukibudinos.epizy.com/formation_ceramiste_rennes.pdfIn PDF document text
    • http://gezewezelatemak.epizy.com/fojusokuluvizen.pdfIn PDF document text
    • http://wilazetifoka.epizy.com/canoscan_lide_200_software.pdfIn PDF document text
    • http://vepesupilet.epizy.com/tomereredinot.pdfIn PDF document text
    • http://nerigob.epizy.com/nice_guidelines_stable_coronary_artery_disease.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_off0000de12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE12 5404 bytes
SHA-256: f134d9e6f4be90af9056c058f8acd9309dea89afb149c6db1ade63488c1b2cb8
font_01_sfnt_off0000f06c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06C 10300 bytes
SHA-256: 359637a066f1ddb04b3d0a1f01b12eba1ac9ccf456766e8abf81035c0195132a