Malicious PDF — malware analysis report

Static analysis result for SHA-256 64c43806c6dde77b…

MALICIOUS

PDF

71.2 KB Created: 2021-02-09 07:09:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e919510bad0bbcf3fa0eca168002d42d SHA-1: 6d322d6c367608d7767441302660af35aa4b7f54 SHA-256: 64c43806c6dde77b3c83654f0a8ef05de78d98fba4e83eb497628dca8d0b6c63
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://jottigo.ru/wb?keyword=logical%20reasoning%20aptitude%20questions%20with%20answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406202/normal_600fcf56a828d.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/creditors_ledger_format_in_excel5u63q.pdfIn PDF document text
    • https://matiposokatogu.weebly.com/uploads/1/3/0/7/130739068/8087090.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376371/normal_5fcc92f218073.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418781/normal_5ff3f79282a1a.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/612268.pdfIn PDF document text
    • http://reduslim-officialsite.site/505811968855v2j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495043/normal_5fc7e29d3a045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_601aa376bf8de.pdfIn PDF document text
    • http://twitter-center.com/streetrace_fury_mod_apk8ezfz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403563/normal_5fc87261a487b.pdfIn PDF document text
    • https://zasawebisev.weebly.com/uploads/1/3/4/8/134865024/dab1baa7f577a.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/wopari/tunnelbear_vpn_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/jupagezipemisiropinapim.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/94055533218.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_off0000d83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83A 5492 bytes
SHA-256: 7d2e833c5571a02d669106566aa2d815590b3755a2f301bb1755f2179ca460ec
font_01_sfnt_off0000eaf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF4 10888 bytes
SHA-256: b9081b32eeaf22dc478087f6efb2d1a45ae22bb2d8baed0d8c9205e5493b5751