Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3f00e15164a798…

MALICIOUS

PDF

76.4 KB Created: 2021-02-11 16:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c46c354eea836818d33bdb52b2223bdd SHA-1: 7e528780cbf81d5669c533be9cdf84c0d8e3d794 SHA-256: 6b3f00e15164a7981e234c62b3b1b0d308d700a74cc56f1ea250b0dd5f187300
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=bepanah+15th+may+2018+written+update PDF link annotation
    • https://cdn.sqhk.co/fezivabuja/gwijV0H/dorobixidewizar.pdfIn PDF document text
    • https://nekazexupogufeg.weebly.com/uploads/1/3/1/4/131454238/lejaku.pdfIn PDF document text
    • http://xojitufos.66ghz.com/jogewavirodevumiwukisola.pdfIn PDF document text
    • https://vigagexagadip.weebly.com/uploads/1/3/1/8/131856194/114697.pdfIn PDF document text
    • http://teagreen.space/jefebotuk80muo.pdfIn PDF document text
    • http://henrysavbr.site/rusopewigonosewiqrw06.pdfIn PDF document text
    • https://waruzakelejabu.weebly.com/uploads/1/3/4/6/134600446/larepodopegumixoxose.pdfIn PDF document text
    • https://barefofu.weebly.com/uploads/1/3/4/4/134492989/3613597.pdfIn PDF document text
    • https://jadowusirufire.weebly.com/uploads/1/3/2/7/132740355/568120.pdfIn PDF document text
    • http://esclub.pro/i_don_t_know_cartoon_faceiegpi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://temekem.epizy.com/lipid_metabolism_chapter.pdfIn PDF document text
    • http://jovurafop.epizy.com/html_page_template_example.pdfIn PDF document text
    • http://fikakoba.rf.gd/finding_complement_and_supplement_angles_worksheet.pdfIn PDF document text
    • http://diwuvugu.epizy.com/setofiwamavomolu.pdfIn PDF document text
    • http://suzujikuluvujov.rf.gd/second_line_apk_old_version.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_off0000eea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA6 5876 bytes
SHA-256: c7a59deedcbd712186fda2f3deb0ecf9a3b9344b94f5df0571c0969224bf9f2f
font_01_sfnt_off0001029d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1029D 9948 bytes
SHA-256: 00915e9e810e3f71efba58829b7ad8d4d6599cfc5e70d01293e86b845e5a0016