Malicious PDF — malware analysis report

Static analysis result for SHA-256 7caa282eed66cae5…

MALICIOUS

PDF

68.3 KB Created: 2021-02-12 12:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 03f472465834e1fb5c1ef47276e5cdba SHA-1: 3841d8134c773eee3b7053ec89b8b7b3dcf0bc7c SHA-256: 7caa282eed66cae509f3971287b8b39f5a6fe7d504a23b547d882ee0da0a88cf
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wb?keyword=writing%20an%20argumentative%20essay%20in%20apa%20format PDF link annotation
    • http://tadunikij.22web.org/23635915791.pdfIn PDF document text
    • http://selomankap.space/70260555161x0qct.pdfIn PDF document text
    • http://peludofnor.fun/mejores_aplicaciones_android_para_correr_gratisfs5y6.pdfIn PDF document text
    • http://health2health.online/forklift_daily_checklist_word_document75ck4.pdfIn PDF document text
    • http://azules.ru/rodaguvepmy11v.pdfIn PDF document text
    • http://manybigs.space/arizona_state_parks_camping_passyqm1j.pdfIn PDF document text
    • http://agreevudb.rest/basic_synonyms_intermediatevoodm.pdfIn PDF document text
    • http://grantmedica.ru/kitty_kate_cooking_restaurantsar7ge.pdfIn PDF document text
    • http://national-verifyteam.com/892218452821lgqf.pdfIn PDF document text
    • http://pomurofame.iblogger.org/55466145865.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zevuketeno.rf.gd/latex_beamer_presentation_template.pdfIn PDF document text
    • http://logururud.epizy.com/petaliw.pdfIn PDF document text
    • http://fibotemirazopo.rf.gd/getoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/homeostasis_definicion_medica.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/87410786268.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_off0000cf63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF63 5364 bytes
SHA-256: 4e536eaf7edfd6698f7a2a49e6183a390a16b5654e5a5e7c2cece7c217bb07b3
font_01_sfnt_off0000e1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AA 10072 bytes
SHA-256: f2b58c727da18ceccc4bcfbde105a9ca25440aa5e107ec2d3e063911d20f22b8