Malicious PDF — malware analysis report

Static analysis result for SHA-256 e754c8f1bdee8b73…

MALICIOUS

PDF

74.6 KB Created: 2021-02-04 14:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d00f3dcdd0318c9a76b3e10163dbd6be SHA-1: 980a161e4cc926a0d47135fa58e3598bdc85b829 SHA-256: e754c8f1bdee8b738cad9e79e66aecbdb3f1765880a3b9c59a4f07605a26e97e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=gulf%20shores%20inshore%20fishing%20report PDF link annotation
    • https://gisonegeviwobi.weebly.com/uploads/1/3/1/3/131383673/4b3439ae5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420612/normal_5fd074d23d7ff.pdfIn PDF document text
    • https://zemotererozo.weebly.com/uploads/1/3/0/7/130738962/tapireju.pdfIn PDF document text
    • https://wiludexubusut.weebly.com/uploads/1/3/2/7/132740186/7146792.pdfIn PDF document text
    • https://todumubisopid.weebly.com/uploads/1/3/5/3/135312552/9579713.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414156/normal_5fe25a9301e3c.pdfIn PDF document text
    • https://kimukotepasa.weebly.com/uploads/1/3/5/3/135329918/bac7b24.pdfIn PDF document text
    • https://zulezinema.weebly.com/uploads/1/3/0/7/130776370/1338979.pdfIn PDF document text
    • https://zodemabu.weebly.com/uploads/1/3/4/8/134896511/6114112.pdfIn PDF document text
    • http://takovod.66ghz.com/cervical_spine_mri_guidelines.pdfIn PDF document text
    • https://mivodijabid.weebly.com/uploads/1/3/4/7/134732330/loguk.pdfIn PDF document text
    • https://gisidamuxifa.weebly.com/uploads/1/3/0/7/130775495/totuz.pdfIn PDF document text
    • https://pubedazemel.weebly.com/uploads/1/3/4/8/134870130/a1fd128dad0d.pdfIn PDF document text
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/1433392.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/kodipopujufipig/astrosage_kundli_for_windows.pdfIn PDF document text
    • http://bubexixan.epizy.com/checkbook_register_template_free_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/fake_whatsapp_chat_app.pdfIn PDF document text
    • http://xafofeb.epizy.com/16868188569.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_off0000e710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE710 4984 bytes
SHA-256: 2792192b87a19ef69b656d7b575b923c85f136d919221ee717d1a7fe8106836a
font_01_sfnt_off0000f809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF809 10932 bytes
SHA-256: e2bdd615e73463787e5e77f60ac74833cea4cd36dcd8f59a5e31ff11319dac45

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