Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a95f33a465cb1e…

MALICIOUS

PDF

72.1 KB Created: 2021-02-21 18:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 224e430150b553c3cba7c6cdd3171932 SHA-1: 4eedb87a73d338b106ab4b443919c20b568a9afd SHA-256: 04a95f33a465cb1e1dafc9ba0ace61f464a26a7fe9cfa122e7b0c2fbb3961de5
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://yafferge.ru/wix?keyword=american+hustle+full+movie+free+online In PDF document text
    • http://frontend-developer-azaynullin.site/home_buying_for_dummies_book5vhtl.pdfIn PDF document text
    • http://opssmall.space/281200726867thfb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426810/normal_5fec289d99700.pdfIn PDF document text
    • http://porn77.design/90608165571s4q73.pdfIn PDF document text
    • http://replyua.site/73054236973uwvuz.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/gclF7gj/16558860393.pdfIn PDF document text
    • https://cdn.sqhk.co/genepajev/uggjhJt/53995376745.pdfIn PDF document text
    • http://sentytld.online/scanner_darkly_end_quotelw47i.pdfIn PDF document text
    • http://kieverts.xyz/linked_barabasiwbsjx.pdfIn PDF document text
    • http://prequester.online/debukirigisuzuwisuxodi25hvd.pdfIn PDF document text
    • http://dkblogin-de.com/tujaronewabevozo3kzd4.pdfIn PDF document text
    • http://pixxel.life/2679083213ssudf.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/j1hiig2/90492128581.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/fVhdrjc/revolut_business_account_opening.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443357/normal_600339f953a45.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/aifLihk/76637310389.pdfIn PDF document text
    • http://gufutaca5.xyz/chordata_book_free0x6vk.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/haQginP/throne_room_lyrics_pentecostals_of_alexandria.pdfIn PDF document text
    • http://dragonflysagewellness.com/mode_one_reviewsn4gr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ddde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDE 5168 bytes
SHA-256: 0570d42734b099c11d1c3fe0ae6170d4782f780afb2ef985a1dc9bb7f9fa81e9
font_01_sfnt_off0000ef4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4E 10488 bytes
SHA-256: 39f3cd19f38037d9923fe429051f8d9534e005b0cb16a73d46753f62ad702a3f