Malicious PDF — malware analysis report

Static analysis result for SHA-256 e422863b0f6f6e48…

MALICIOUS

PDF

66.8 KB Created: 2021-01-29 21:04:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: c7b0f7f5423956f426802133b3deee2d SHA-1: d4437364e5cd22c0ff8c5e1860b6599f2286f02a SHA-256: e422863b0f6f6e48e30f704f6aba9795562edc5c863a9975a51af2507b18a1dc
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/aws?utm_term=airwatch+inbox+android+user+guide PDF link annotation
    • https://cdn.sqhk.co/wugunifikezu/sPgiWgj/sasapusatuxiv.pdfIn PDF document text
    • https://cdn.sqhk.co/lipidupi/2daUVhd/tumblr_girl_dress.pdfIn PDF document text
    • http://leopolds.space/girowazesajenitesevani5r34x.pdfIn PDF document text
    • https://tivifetanesa.weebly.com/uploads/1/3/5/3/135347176/pifeloxazaxixigewiv.pdfIn PDF document text
    • https://cdn.sqhk.co/bobavijiwoba/cehangd/40978229918.pdfIn PDF document text
    • http://volosaty100.xyz/459411584106uthu.pdfIn PDF document text
    • http://rmk4sale.xyz/isabel_allende_libro_paula4yysd.pdfIn PDF document text
    • http://netewe9.xyz/boris_and_the_dark_survival_apk_androidanw95.pdfIn PDF document text
    • https://cdn.sqhk.co/fisejadiruw/ghlughh/fizonuwuton.pdfIn PDF document text
    • https://cdn.sqhk.co/nimabugokofa/dlicgjh/mojupawegulovidi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipulitexaxuz.epizy.com/soxotevulinofafowewuwev.pdfIn PDF document text
    • http://xufoturimixeb.epizy.com/factorization_worksheets_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/engineering_design_report_pelican_nest.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/bipapasasefekuronixalev.pdfIn PDF document text
    • http://mirivukavezigo.epizy.com/dejiwamuje.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_off0000cbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBC 5460 bytes
SHA-256: 0b3d899e2fee57e8c2b22a4dd3cc04fa37b897a14ad7b20248edc601014dedc5
font_01_sfnt_off0000de54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE54 9352 bytes
SHA-256: 1b78e58f170ec51076a27a67f58f7798f74d3bd085fb8582b1b2216dc05415f5