Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a46e4d65108c890…

MALICIOUS

PDF

66.6 KB Created: 2021-02-05 00:52:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ccbd6bc4d0aeda11109ca0158b3043b4 SHA-1: 9a9580f05edaac6e67421bf9223e033da43c8d4c SHA-256: 0a46e4d65108c890a58c4276554bb9e82d2fcddedc85bdbb55aeca48849ec68b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/wb?keyword=android%2010%20s8%20xda PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375356/normal_5fd393ff48ebe.pdfIn PDF document text
    • https://dujekiwirole.weebly.com/uploads/1/3/4/2/134266498/a4734.pdfIn PDF document text
    • https://cdn.sqhk.co/nutewakizi/cje6R7C/worawu.pdfIn PDF document text
    • https://zepukuliro.weebly.com/uploads/1/3/5/9/135964459/minakuxanolesilan.pdfIn PDF document text
    • https://putoxovomugov.weebly.com/uploads/1/3/0/7/130739063/be39485bd5467f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_5fe7d550a43ab.pdfIn PDF document text
    • https://meremunodimabak.weebly.com/uploads/1/3/4/5/134516451/e3b0ebd96c73e.pdfIn PDF document text
    • https://jukejifoka.weebly.com/uploads/1/3/5/3/135311866/2096405.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500189/normal_5ff1236e894cd.pdfIn PDF document text
    • https://cdn.sqhk.co/butofelo/x7dQeic/beautiful_red_rose_3d_wallpaper.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/lubek-tisawa-vuwalido.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/48332436010.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/gokeridaxunejejolukakov.pdfIn PDF document text
    • http://gotuzarodeg.epizy.com/excel_lookup_multiple_value_from_another_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/chhichhore_full_movie_movies4fun_hd_quality.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_off0000c7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D0 5232 bytes
SHA-256: 36fcff34f632c3a824eabf17b36718e2317cc75842304645fde9c199379df00c
font_01_sfnt_off0000d9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B4 10552 bytes
SHA-256: dc4be8d156598a329d718eb1c61ad682a13ab36dfef31026b823dcf98b2a4767