Malicious PDF — malware analysis report

Static analysis result for SHA-256 40ca070df2ca2595…

MALICIOUS

PDF

79.3 KB Created: 2021-03-04 07:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a3f0d4aaeeb66cb6639ba6e8fdbd2b0d SHA-1: f06534581bcb9cf3dc13e7b97d3779b67f6113c2 SHA-256: 40ca070df2ca25950cb22c92542354e4d7c83eaa4a6d79edf6a761471dba8a6e
126 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
  • 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://lozipotod.ru/wix?keyword=peak+anders+ericsson+pdf PDF link annotation
    • http://gizaxeredemuni.22web.org/67055729473.pdfIn PDF document text
    • http://varistop.site/quadratic_functions_worksheet_algebra_29p0c2.pdfIn PDF document text
    • https://tupirusu.weebly.com/uploads/1/3/4/7/134702138/penitodoxunuleju.pdfIn PDF document text
    • http://imkl-checker.com/rawekugisaxukacv5e2.pdfIn PDF document text
    • https://cdn.sqhk.co/bufudoraxala/dWEKOqc/zumapeloloripunidalu.pdfIn PDF document text
    • http://xinorigevidemo.iblogger.org/dapevotazerilikixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392237/normal_6016ebf2f00e9.pdfIn PDF document text
    • http://muldwych.com/how_to_value_a_car_uk3qpqj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448991/normal_601515e01127d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454429/normal_6004aa7d808b1.pdfIn PDF document text
    • https://zokolukesowi.weebly.com/uploads/1/3/0/7/130776120/ropin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480750/normal_5fe642b9665f8.pdfIn PDF document text
    • http://presalon.xyz/briggs_and_stratton_engine_manuals98i9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485005/normal_6017019cb26fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375361/normal_60029014d770f.pdfIn PDF document text
    • http://quickpapp.online/mudonapixomiviganulurekw9ck.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/1399451.pdfIn PDF document text
    • http://gisejol.iblogger.org/65325984742.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_off0000f96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96A 5184 bytes
SHA-256: 3231c6a26a4b6cc4a1020947585bc4cdc15b749ecc79384a206c6e8af8c2a1fe
font_01_sfnt_off00010b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B20 10916 bytes
SHA-256: 3babbb2e683b9a2d6c97ab2f9046e047dff658223b0c0633b0230f480fb3a025