Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e261fa99702bc3e…

MALICIOUS

PDF

73.7 KB Created: 2021-02-26 01:28:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 58c08372b58ff5781624ed5c2d60d0f7 SHA-1: daf49c0003235a3fd2c6108131674fe5bb9a1b92 SHA-256: 7e261fa99702bc3e6ff0546fbf920f6ea4bad1c39563e3e2ab7fb9eef36bb613
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://crophysi.ru/wb?keyword=scoutbook%20den%20leader%20app In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388067/normal_601e057abcf73.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/qNxijje/baleadas_restaurant_near_me.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/wixubabatoxijor.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/gKFfhgW/16755414296.pdfIn PDF document text
    • http://vitrinachel.ru/37076204695lqh41.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/jgiib1M/extreme_car_driving_simulator_2019_hack.pdfIn PDF document text
    • http://kvrovk.xyz/852029992387xb77.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/why_does_my_samsung_tablet_keep_powering_off.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/ifA9iaS/90s_skater_jeans_primark.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/lista_de_verbos_regulares_e_irregulares_en_ingles_y_espaol_conjugados.pdfIn PDF document text
    • https://cdn.sqhk.co/jidevumedure/qRhhfja/2988206641.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gafodix.myartsonline.com/what_is_the_news_of_covid-19.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/tipobugibozigaxiwekegiw.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/32099032430.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/dmv_nc_test_answers.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_off0000e336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE336 5196 bytes
SHA-256: 08a33e4d033fe111d1a99e52148ca85da2b51b6437e1bd4153726260b5cb6dd9
font_01_sfnt_off0000f4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EC 10984 bytes
SHA-256: b84655d3f2f90e552ebe4c9cc92f0846f34e8fcab258c68780d202996477a51a