Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8df5f8f554ba3b0…

MALICIOUS

PDF

70.9 KB Created: 2021-02-10 17:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 77357dd4fe45f954749af6c67482214d SHA-1: 370eec5994a7d2ea92b5721c19a3a1d02ab60f75 SHA-256: b8df5f8f554ba3b0bf4195088a960d6cb220b829bb040aad23828cb102076260
126 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
  • 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://seumenha.ru/aws?utm_term=audrey+body+scanner+apk PDF link annotation
    • https://zuvagojajom.weebly.com/uploads/1/3/5/3/135398962/f68146346e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497095/normal_5fda34059fba1.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/jcL3igZ/data_cable_support_software_for_pc.pdfIn PDF document text
    • http://lefavapexusa.iblogger.org/worksheet_double_digit_addition_and_subtraction.pdfIn PDF document text
    • https://fizilotot.weebly.com/uploads/1/3/6/0/136050642/3026170e9f28a.pdfIn PDF document text
    • https://sowekunozo.weebly.com/uploads/1/3/5/3/135321923/1716767c806537.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450624/normal_5fcfa5b519619.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ziradisam.rf.gd/27740616215.pdfIn PDF document text
    • http://jegowijuvu.epizy.com/82080856121.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/update_itunes_manually_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/44866829626.pdfIn PDF document text
    • http://kidereludabiron.epizy.com/56442224974.pdfIn PDF document text
    • http://zezazemana.epizy.com/doubles_worksheet_grade_2.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/mikoligivu.pdfIn PDF document text
    • http://sexikiti.epizy.com/xajetijukoriruwege.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_off0000d838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD838 5328 bytes
SHA-256: 3af6b019e667c47e44175ac35a6c5105415a1f7dcfae791314b4ddd6f58afafd
font_01_sfnt_off0000ea6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6C 10644 bytes
SHA-256: af3642dafd3522b330f1162fcd61c18707dd1ddee1dee5eb6341f0de250fab42