Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ef03702fde6e2ca…

MALICIOUS

PDF

61.8 KB Created: 2021-02-10 07:03:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7515b60efddd81b7f4d30a2490a6edbc SHA-1: 285c70388b4ace8265f3fb367b6dfb69b03dc0cd SHA-256: 1ef03702fde6e2ca218911d83d5da0fb296a7b4ce66c31fb0df90509b0098aa0
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://leonvi.ru/wb?keyword=rocket%20chat%20android%20source PDF link annotation
    • http://pedron.fun/7319868759206kp4.pdfIn PDF document text
    • https://pepomujotopulog.weebly.com/uploads/1/3/4/8/134873529/7856803.pdfIn PDF document text
    • http://vunobugos.22web.org/sisuvadujegig.pdfIn PDF document text
    • http://italia-doc.fun/inference_worksheets_for_grade_5ph6sv.pdfIn PDF document text
    • https://pazomanu.weebly.com/uploads/1/3/1/0/131069777/zonexuxabup-guravaxekajab-zitapetaru-nejojewewunisep.pdfIn PDF document text
    • http://fopuval.22web.org/28984644894.pdfIn PDF document text
    • https://cdn.sqhk.co/besawevij/hehacja/home_assistant_raspberry_pi_zero.pdfIn PDF document text
    • http://snail-case.store/jesurivuwenofoveko8dwrn.pdfIn PDF document text
    • http://istra-backwater.ru/49513240638i1ear.pdfIn PDF document text
    • https://rudusixan.weebly.com/uploads/1/3/0/7/130775573/vojawar-sapalidokusa-besikipegiwedam-weteduduzular.pdfIn PDF document text
    • http://boothattendant.com/rikugadikemeri7ypsr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://keximatefabuzi.rf.gd/43256984221.pdfIn PDF document text
    • http://dujawupiraxep.rf.gd/bcbs_michigan_medical_policy_guidelines.pdfIn PDF document text
    • http://wafazitowem.rf.gd/63021992838.pdfIn PDF document text
    • http://lepiwapugu.rf.gd/ludwig_s_angina_guidelines.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_off0000b56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB56C 5064 bytes
SHA-256: 0a0120e61119a704be0a3d1ee2b4cbdde02b0dfd4d4cd7d81e73d76324ab3446
font_01_sfnt_off0000c6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A0 10440 bytes
SHA-256: e30636949bffa612b23d46fed2449f3136e2aa3fc45bf6cb3fecf8b7ab43ea60