Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a1c11a39f5ac89…

MALICIOUS

PDF

73.2 KB Created: 2021-03-01 01:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ad9bf4f43b2f366dbbb4bcdaaf94cc26 SHA-1: be0cddcb39049c2e3c2e80235b913822ee246968 SHA-256: 37a1c11a39f5ac8962a79dfc49f159a72ee2ad5b77139bd4b23ff0d2364342cd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/wix?keyword=embedding+quotes+into+your+writing+worksheet PDF link annotation
    • http://saxobupazes.sportsontheweb.net/a_river_runs_through_it_title_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/sevigexew/wLihn6D/hello_neighbor_hide_and_seek_walkthrough_act_3.pdfIn PDF document text
    • http://subuxiwubemew.getenjoyment.net/dillon_650_for_sale_south_africa.pdfIn PDF document text
    • https://cdn.sqhk.co/xigofidiw/MieVhjx/cars_vs_cops_4j.pdfIn PDF document text
    • http://fastpysystem.online/how_to_draw_simple_bookwersa.pdfIn PDF document text
    • http://idem-peshkom.ru/defulo42a0l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375705/normal_5fcf1ec2b6e47.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/gUX7biR/44508409209.pdfIn PDF document text
    • http://vukuradi.mygamesonline.org/cyberpowerpc_keyboard_keys_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/neviragar/igLijjf/city_s_edge_warsaw_mo.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/36127000824.pdfIn PDF document text
    • http://kasaxeko.mypressonline.com/toyota_2020_price.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tomafidom.rf.gd/bizasutojax.pdfIn PDF document text
    • http://refipazak.epizy.com/ergonomics_risk_assessment_template.pdfIn PDF document text
    • http://vudazirukileri.epizy.com/37214366344.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_off0000e29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29D 5476 bytes
SHA-256: 75dece371c88bd6466154b26c7d45aec6d28e3995a6fb9cbcf2c5046ccee75e8
font_01_sfnt_off0000f526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF526 10108 bytes
SHA-256: c65093d84a22fafad4376f9a8e7f1e0d00051df0efaff731bb095dad3fba284f