Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c0c28ba7cc2fc8…

MALICIOUS

PDF

72.0 KB Created: 2021-02-22 08:37:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1910b2841ce7cd0223473d70a197f76d SHA-1: fddade675021e9f0269e78cd77d445ff6db90f82 SHA-256: c7c0c28ba7cc2fc8fab1653ab445bfd6abbc5924d980ac966aeee7ae22d0c4fb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://wekigenajelu.weebly.com/uploads/1/3/3/9/133999196/3431752.pdf.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jottigo.ru/wix?keyword=mechanicsburg+post+office PDF link annotation
    • https://wekigenajelu.weebly.com/uploads/1/3/3/9/133999196/3431752.pdfIn PDF document text
    • http://tutavizukatafoz.22web.org/91084339722.pdfIn PDF document text
    • https://nibafokabatawal.weebly.com/uploads/1/3/0/9/130970001/jivip.pdfIn PDF document text
    • https://cdn.sqhk.co/sexifirume/dU9jeqC/lujizadufijobudomumos.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/1B8FSMN/99605524117.pdfIn PDF document text
    • http://virutimi.22web.org/acknowledgement_letter_for_thesis_sample.pdfIn PDF document text
    • http://help-ruleviolation.com/1978_ford_truck_shop_manual3s5m4.pdfIn PDF document text
    • http://raruvutemogogog.iblogger.org/pumixitobo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_601b36349b4e3.pdfIn PDF document text
    • http://pelobana.66ghz.com/words_that_start_with_ed.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/FgehfFi/lol_remix_dolls_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/jgg2npG/moseremivutefabazedunin.pdfIn PDF document text
    • https://zeruxitewisav.weebly.com/uploads/1/3/1/8/131856065/dapabiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422640/normal_600771f40e646.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://butazajoru.rf.gd/zifafimafodudojobiriviwow.pdfIn PDF document text
    • http://saxuvoluzoz.epizy.com/bleep_test_police.pdfIn PDF document text
    • http://fesonukoropirum.rf.gd/front_office_organizational_chart_template.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_off0000dd20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD20 5388 bytes
SHA-256: ee258746699e27da330a76b7dc1a4ffa49a8ea762985f966da5fe0a4ed6d24e1
font_01_sfnt_off0000ef7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7A 10332 bytes
SHA-256: adb379e60b0d85f2feccc88d97c072a2a3cf7194f3a74a4d23da248f6ccb8cbc