Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1550805a8445a5…

MALICIOUS

PDF

72.6 KB Created: 2021-03-05 02:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2163fdef6eebc78ba5c4d3b5e0dac426 SHA-1: 7ab34637391e72c72659bb7ff3fff22e459fa3a1 SHA-256: ad1550805a8445a54350224bf6409ac9cefe6cb66fbcaf624a1e316ae2368973
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://botokaw.ru/award?keyword=stanley+45+plane+for+sale PDF link annotation
    • http://buytoday.cc/75246898392mzxx2.pdfIn PDF document text
    • http://copyright-help-center.com/361849491207i8ho.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/38569354799.pdfIn PDF document text
    • http://domavera.ru/interview_with_the_vampirecn6ox.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/learn_russian_free_online_video.pdfIn PDF document text
    • http://ribadubeko.scienceontheweb.net/lelagakerowupusuwigoposup.pdfIn PDF document text
    • http://study-english-02.space/234037090251sr2c.pdfIn PDF document text
    • https://xonatiwomunonow.weebly.com/uploads/1/3/1/8/131856992/b16ea1a3a1.pdfIn PDF document text
    • http://jinosewifuwefe.22web.org/96177824484.pdfIn PDF document text
    • https://dufibivi.weebly.com/uploads/1/3/5/3/135346242/tofagisigil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://504706c9-3a86-45eb-876a-6494ef133fff.filesusr.com/ugd/80c1db_7f1b5859e4074117ad0f1b0446c661af.pdf?index=trueIn PDF document text
    • https://27dd58ca-3bab-4825-b0a2-cb75a9f796de.filesusr.com/ugd/aba4c5_65b7be2df53a488c96b0fe7b7d17384d.pdf?index=trueIn PDF document text
    • https://e7ba4f66-d023-404d-a355-a5b98970f127.filesusr.com/ugd/cac9e4_f8e15c85305c4faba81320691e39857a.pdf?index=trueIn PDF document text
    • https://84bd2c60-91d0-47b6-9565-6ae8a6593e58.filesusr.com/ugd/963627_a5d96eebf72746ec9eae11cf2cc1128a.pdf?index=trueIn PDF document text
    • https://94db4134-5784-44c5-a63d-963e509970fa.filesusr.com/ugd/9c58c5_840890a1e8fb429588433e36153f5f6a.pdf?index=trueIn PDF document text
    • http://rubijisezet.epizy.com/parental_consent_form_template_for_filming.pdfIn PDF document text
    • http://xuxerutiwuv.onlinewebshop.net/is_wendys_chili_low_carb.pdfIn PDF document text
    • https://3175e58c-9db9-4d87-bcb9-15e03531d93d.filesusr.com/ugd/c93210_90806ea9c783475195c6bd55479e89d5.pdf?index=trueIn 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_off0000de4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4B 5312 bytes
SHA-256: 3c58ac7b17895cdae760f9eeac7d5ff621f94e74f6cd28a6c72b3c1ecbe1a2b4
font_01_sfnt_off0000f07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07D 10832 bytes
SHA-256: 2c4db8ff4c365b6c04d0f7d576165bf8f6b18f3c138263c34df104b664eeba61