Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a385f18ef388751…

MALICIOUS

PDF

68.6 KB Created: 2021-02-25 10:57:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1cacdf6b5dcee8c35564351ab94221f0 SHA-1: 61f70f4d1f24713226cad56ee15da676515824b0 SHA-256: 7a385f18ef38875112753624f2731aeaecc0e0dae9e6d6ac645fcd8272093886
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://crophysi.ru/award?keyword=stihl+chainsaw+ms170+price+south+africa In PDF document text
    • https://cdn-cms.f-static.net/uploads/4470532/normal_6012d9ad7cb79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485435/normal_5fec944175cbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473616/normal_5fdeded96a4ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412606/normal_5fee2f1361f87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444852/normal_5fea1fbd5ce37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481166/normal_602928e8c9f48.pdfIn PDF document text
    • https://cdn.sqhk.co/kolazapikib/bxIhIjj/70456492654.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/mebutetaliw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387817/normal_5ff8619c09ddc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386074/normal_6008ffafc01ef.pdfIn PDF document text
    • http://faxusupovetek.sportsontheweb.net/fleck_5600sxt_64000_grain_water_softener.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453719/normal_5fd660a97c259.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468828/normal_602227942fe41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_5fd1c6c2eb8c6.pdfIn PDF document text
    • https://cdn.sqhk.co/miwavilusaji/ZviiDhc/wivusemeziwejuzanizi.pdfIn PDF document text
    • https://cdn.sqhk.co/kenixidoxexi/hi1hBmz/vamipakide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pusapovewazigu.onlinewebshop.net/how_to_be_a_better_husband_book.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/gusanezuxobidajuseburefes.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/vebizisubeb.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/platform_shoes_summer_2019.pdfIn PDF document text
    • http://jokosen.atwebpages.com/iso_22000_2019.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_off0000cedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDC 5724 bytes
SHA-256: 8d0d43a2924ac3ec26a636eaec4b039a426d98789ef1800b95393543e68b91e9
font_01_sfnt_off0000e24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24F 10168 bytes
SHA-256: e28d6d70b736fe1825ca26da61fe84bb327bcacbe2499ab125d5610d7776a5d0