Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6b2908c1d5c907…

MALICIOUS

PDF

76.2 KB Created: 2021-03-30 03:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65e48ff2c4b80606bbd059295749e8ae SHA-1: a25794026775005b945be4508654a3f64bf61529 SHA-256: 7e6b2908c1d5c9078a81ca1f3b024cfa9e0bdd85bc7ced333870addaea976a87
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan and an ML classifier indicating maliciousness. It contains a large number of external links, with one suspicious URL pointing to 'jacksth.ru'. The presence of urgency language suggests a phishing attempt to trick users into clicking these links, which could lead to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=kigtropin+for+sale+uk
    • https://xunijududivajol.weebly.com/uploads/1/3/0/9/130969830/14ef71e70.pdf
    • https://static.s123-cdn-static.com/uploads/4463810/normal_5fff5c0c67972.pdf
    • https://cdn-cms.f-static.net/uploads/4370068/normal_605b9dae4f847.pdf
    • http://pitushok.space/brother_hl-2270dw_drum_cleaningyq4ca.pdf
    • http://hallop.xyz/wuzevazeviganebibitagovi3zr5i.pdf
    • https://larigagip.weebly.com/uploads/1/3/4/8/134887586/dad05ecf.pdf
    • http://blacklaser.ru/60386386965qo3lk.pdf
    • https://cdn-cms.f-static.net/uploads/4528915/normal_603df3d12988e.pdf
    • http://novemipet.22web.org/88344947027.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c8070bf9-ed42-4c5d-8eb8-ca35ee70f136.filesusr.com/ugd/d38238_f7a401215dc44ad5a3b79f889dacf9d9.pdf?index=true
    • http://zukusuvajijip.epizy.com/cartoon_drawing_boy.pdf
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_4c738e0f7c894fa6a0ed1fa4153f266c.pdf?index=true
    • http://pisisagul.epizy.com/74677676120.pdf
    • http://reniwen.rf.gd/ascension_parish_arrest_report_july_2018.pdf
    • https://a86a6b26-b473-4b55-b9aa-7628a2bff077.filesusr.com/ugd/4f270c_a7493b2c48ca4a5aba2fd84092fbdc04.pdf?index=true
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_e2f59a2ef12b4c71b1900d101eb48d59.pdf?index=true
    • https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_c610a348da0e4785a69e88e66e4e03c1.pdf?index=true
    • https://4b3c1411-62fe-4b74-ac0d-dad8ff5dd90a.filesusr.com/ugd/d10829_a7734bd1ee574e7aa4e077c8e98b21b0.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca0.bin
54dea47cb0973bd5fe9d5376d5a5982f507911105ab39d8048ad02a1181c8a29		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECA0 5104 bytes
font_01_sfnt_off0000fe15.bin
564632cd4391cb0a90546ed09127ec16709af2186c3390f71596c59b60602079		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE15 10984 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.