Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32d239dae22d757…

MALICIOUS

PDF

73.1 KB Created: 2021-02-28 06:23:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5132ca716d9817c206d196485e0d94ee SHA-1: 90d29a8c165d6aa42649a568b9c5cc2779cbf20c SHA-256: c32d239dae22d757a31dc2e37c2ba449846399cabf3df0ead94f48f50c41d928
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://sikiroradimer.weebly.com/uploads/1/3/4/6/134619363/leresuxowotunuv.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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://druttle.ru/award?keyword=2000+ford+ranger+transmission+oil+cooler PDF link annotation
    • http://bibuzikufaje.mygamesonline.org/lefivivakegipomup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477163/normal_5fca7f238cc35.pdfIn PDF document text
    • http://dunotap.iblogger.org/80692880209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403266/normal_60120e571ff4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469143/normal_5ff9b748d21eb.pdfIn PDF document text
    • http://kitigaw.22web.org/2018_june_calendar_template.pdfIn PDF document text
    • https://sikiroradimer.weebly.com/uploads/1/3/4/6/134619363/leresuxowotunuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rubuvajaroxe.epizy.com/avital_ronell_books.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/36235788180.pdfIn PDF document text
    • http://zuputes.atwebpages.com/gitexuwufonufakafedo.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/wrong_turn_series_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/enable_android_apps_on_chromebook_g_suite.pdfIn PDF document text
    • http://deroselewem.epizy.com/27422331576.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_off0000e078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE078 5520 bytes
SHA-256: f4ef0826d3bdf7f9b8ef15dc16064ea6b5a2d1ddd6196194fb6c439b5a455882
font_01_sfnt_off0000f32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32A 10816 bytes
SHA-256: c262bd84fad42b0807c47af332a5b3054b4a1b780e2d69c8922ac5956c660424