Malicious PDF — malware analysis report

Static analysis result for SHA-256 f407045f2ead09bf…

MALICIOUS

PDF

68.8 KB Created: 2021-02-22 17:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7a7bc719a0e92090dbc1931ca241d9a6 SHA-1: 4057aaa5c2f5f5b80949ce5254387a3df5568c8f SHA-256: f407045f2ead09bfb9c383ab0461e44a65c7979c8502babb6df4241ed85f214d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=jex+peptan+max+joint+pain+relief+natural+essence In PDF document text
    • http://inscarusa.info/do_polaroid_tablets_have_bluetoothg5ivf.pdfIn PDF document text
    • http://betixisu.22web.org/vemegasivoxidevese.pdfIn PDF document text
    • http://clyb-wylcan3.space/kendo_spreadsheet_column_widthil84t.pdfIn PDF document text
    • http://salopkisa.website/954126554g67v1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421217/normal_5ff994b29b8e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385859/normal_6028bf41db886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470552/normal_601047113179c.pdfIn PDF document text
    • https://pupadidaf.weebly.com/uploads/1/3/0/8/130873798/a404d85beb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368495/normal_601a46f05dd35.pdfIn PDF document text
    • https://namazowofurap.weebly.com/uploads/1/3/4/3/134372349/lavanapujanuriw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485942/normal_5fcebecb3fe00.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dapuzuro.epizy.com/texto_argumentativo_ejemplos.pdfIn PDF document text
    • http://dalefiza.rf.gd/jawepugavajumugakosunus.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_off0000caa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA2 5296 bytes
SHA-256: fce4be5db8d21c8224f0a8768ce6a40abf64cb0eb348ecac869c5bda769d1bbe
font_01_sfnt_off0000dc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9C 14832 bytes
SHA-256: be804fa26f6f8c7cb2640674f8a59a5a651b3860bcfd0b57dfb5db90251de774