Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1a6e2c37d7f915…

MALICIOUS

PDF

81.6 KB Created: 2021-02-10 19:44:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9717a61192ae913c26b448b1e5402a5e SHA-1: 69a6ab32ada022d84bae8a409e85c6c23b09f33f SHA-256: ff1a6e2c37d7f9150398e516d3a7d8152c2af7b636e39d9750ec676866a65668
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=fbi%20uniform%20crime%20report%20statistics PDF link annotation
    • https://cdn.sqhk.co/wadelovelo/gDhiegc/simple_drums_pro_the_complete_drum_set.pdfIn PDF document text
    • http://kataeta.club/abbyy_finereader_engine_12kgwlo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383678/normal_600364d3df23d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386095/normal_5fe2fd09e6b48.pdfIn PDF document text
    • http://laura-egorova.ru/towopuzmvivu.pdfIn PDF document text
    • https://cdn.sqhk.co/pegebatanuz/5nEwhiW/lalevuduxonidemiraga.pdfIn PDF document text
    • https://rigugoxa.weebly.com/uploads/1/3/0/7/130776225/gijinovuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490129/normal_60077becf3a87.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/jkibEDc/best_live_streaming_apps_to_make_money.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/6iun7gc/will_chicken_broth_go_bad_if_left_out.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447460/normal_60021897d6866.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/Njjjcia/14322810161.pdfIn PDF document text
    • https://roriwemako.weebly.com/uploads/1/3/4/5/134599113/dc2a7caea2c5f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450440/normal_5fda54b5ce94d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375896/normal_5feb0744977a3.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/4686466515uxtu2.pdfIn PDF document text
    • http://com-connexion.xyz/coloured_acrylic_sheets_near_melr3sd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459468/normal_5ff096368201b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000101f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F4 5224 bytes
SHA-256: 0902954956f12eacb896a85560bf320ca6fff9cf6724ecdc9878805f4c5c493d
font_01_sfnt_off000113a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A6 11324 bytes
SHA-256: 03234366ca6a5c70ea4cfa0a5bca11d4cec2b4d8ea1f688559a28a47164dfb83