Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3ac77b4d3d1839…

MALICIOUS

PDF

91.3 KB Created: 2021-03-10 12:28:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9651f7b535fe1367089597e1decb01c8 SHA-1: 0409a524bc7cda89c7c1598c3bac451e8cfbafae SHA-256: 9e3ac77b4d3d1839e124a50431e6176f76d0ef5a05824eb8e2dc3492c4fc4d4a
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://leonvi.ru/award?keyword=mastering+autodesk+revit+mep+2020+pdf+download PDF link annotation
    • http://fruitnaturs.space/realidades_1_capitulo_3a_answers_page_95dmq4v.pdfIn PDF document text
    • http://aydym.club/xirikoagjnc.pdfIn PDF document text
    • http://20970907.net/diary_of_a_wimpy_kid_the_last_strawmt9qw.pdfIn PDF document text
    • http://intekzafast.online/esl_countries_and_nationalities_worksheetf2xpz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370097/normal_603759c16c519.pdfIn PDF document text
    • http://edaruzal.xyz/pearson_realize_math_answers_geometrybnw3u.pdfIn PDF document text
    • http://cabinetsly.xyz/wisunaz6l7t0.pdfIn PDF document text
    • http://best-ital.fun/what_is_self_destructive_depressionb737j.pdfIn PDF document text
    • http://znasila.ru/musolemisonwqxuo.pdfIn PDF document text
    • http://supobesopo.mygamesonline.org/61506558967.pdfIn PDF document text
    • http://greatholl.com/likivizedagbr3b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426945/normal_5fd0ab412e29b.pdfIn PDF document text
    • http://fruit-italy.space/how_to_wash_vinyl_flooringbuaoo.pdfIn PDF document text
    • http://centerverifybadge.com/manual_network_selection_iphone_5s_ios_11yvciv.pdfIn PDF document text
    • http://gukiduwonaxinef.getenjoyment.net/what_are_the_12_steps_for_alcoholics_anonymous.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuxerutiwuv.onlinewebshop.net/el_pentateuco_pablo_hoff_completo_gratis.pdfIn PDF document text
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_1684d756af46416e9cd7cbe7426763ce.pdf?index=trueIn PDF document text
    • https://39c10a3a-92c6-412a-a1bb-b8a1fc48fbc4.filesusr.com/ugd/259099_5863cd58696940e1b313c37b23fd8576.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_off0001272d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1272D 5856 bytes
SHA-256: a916c9426b1465f2b3e8b52555009799258d259b7f5074a2433571ab488ca32a
font_01_sfnt_off00013b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B2A 10720 bytes
SHA-256: 9fa89ec3604724aa389c0b5d0c11f4b56dc64ac9bccb301aa277ede37893a6e6