Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bbcc8c0dc53d835…

MALICIOUS

PDF

69.2 KB Created: 2021-02-13 12:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6bb85075dbf991993bc0c5b558313e98 SHA-1: af1498fa341a8ff892ae8a23cb7f273160d21eec SHA-256: 9bbcc8c0dc53d83597f1287fd8a69f01341d88fb700233b22596b04efb984407
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/wix?keyword=jesus+te+llama+pdf In PDF document text
    • http://jodopafipunew.22web.org/bcbs_az_provider_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375341/normal_60257035663d2.pdfIn PDF document text
    • http://testertumentum.space/89918380305la2ne.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475380/normal_5feec6e613a94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474445/normal_60138b3092a60.pdfIn PDF document text
    • http://naturagrush.space/armies_of_exigo_plpji2f.pdfIn PDF document text
    • http://giocodigital.fun/eclipse_avn110mrc_user_manualwpjdt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379486/normal_600580a2a34e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378383/normal_5fc58d5576770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470552/normal_5fda2bd86e87c.pdfIn PDF document text
    • http://wisecreditscore.info/lusadevelupategobawixuputzphd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493610/normal_6008096934b90.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nipuwiwabo.rf.gd/learn_english_for_beginners_worksheets.pdfIn PDF document text
    • http://siparedobapu.rf.gd/36085122499.pdfIn PDF document text
    • http://tubofebagadupa.epizy.com/neonatal_jaundice_guidelines_singapore.pdfIn PDF document text
    • http://misebupafavo.rf.gd/buwenajeraz.pdfIn PDF document text
    • http://jenikov.epizy.com/55506008413.pdfIn PDF document text
    • http://xevupan.rf.gd/curriculum_map_template_word.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_off0000d197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD197 5080 bytes
SHA-256: c6f91c160a83fa4811d844f780053674cc6fc7ebc514b3d697e018b0a8e8f4ce
font_01_sfnt_off0000e2d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D1 11432 bytes
SHA-256: 0e78ffc1db827578cffd087c9fae95b739c1133609e2cbbad8595bc5ec64f825