Malicious PDF — malware analysis report

Static analysis result for SHA-256 1591e136d32e89af…

MALICIOUS

PDF

66.6 KB Created: 2021-02-27 01:11:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ab08294340c651e050ef664e3904b7d2 SHA-1: bb314809adbd40a50081b5fc137573a02678296e SHA-256: 1591e136d32e89afe932bb2ba3a0271aca3b4b368f3695b3a2515a7dddba19be
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://xajibur.ru/wix?keyword=yupptv+apk+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418755/normal_5fcd2d71ae954.pdfIn PDF document text
    • http://bogplaktnc.fun/reviews_for_all_my_sons_moving_companyj0rqo.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/UjbAsYX/nizekopeziji.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/anSFjhr/boxing_star_apk_mod_1._6._1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489244/normal_603307b5749ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387698/normal_5fe7f26028b1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401714/normal_602892a5a7e6e.pdfIn PDF document text
    • https://cdn.sqhk.co/rexazileka/hgejfia/xiliviworos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367940/normal_6033297be3093.pdfIn PDF document text
    • http://trelon.fun/i_got_blood_on_my_hotel_sheetsgqomd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388046/normal_6026aa32bbbe2.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/munatunetejipoxared.pdfIn PDF document text
    • http://dihtyar.online/geometry_worksheet_8.1_similar_right_triangles2dact.pdfIn PDF document text
    • http://invitesistem.ru/directions_worksheetjqw20.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://petojijoxura.onlinewebshop.net/lumakog.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/how_to_become_successful_in_network_marketing_business.pdfIn PDF document text
    • http://xuxerutiwuv.onlinewebshop.net/95674995723.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_off0000cb0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0E 4856 bytes
SHA-256: 0d220472a26527e6030e002c849ef3b0d206f418c164f538989d72ecaace0e25
font_01_sfnt_off0000dbc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC1 9936 bytes
SHA-256: ae04d11cbc3fe95c4a02229b2c98fb63d277510927578b7ca7f6b98e500a5451