Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b90bfbd6622405…

MALICIOUS

PDF

48.0 KB Created: 2021-04-08 04:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 08f99ee08ba69a5e71bab0da09fce3ea SHA-1: 02c8080ea00b74a6f80f04b9783f6a4f2e4d691a SHA-256: 85b90bfbd66224054b5b8f6fa920a0b51646572f2473d8fc353436d5997ff661
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7228

Heuristics 4

  • 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
  • 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://lozipotod.ru/strik?utm_term=how+to+explain+criminal+background+in+interview PDF link annotation
    • http://hopecommunitynaz.com/6454380812542h4s.pdfIn PDF document text
    • https://xuratofojiwob.weebly.com/uploads/1/3/4/0/134096374/zezipafezo-xutara.pdfIn PDF document text
    • http://videohost.space/dixie_chopper_servicehi0ii.pdfIn PDF document text
    • http://tesazidon.22web.org/network_topology_design.pdfIn PDF document text
    • http://milesnires.xyz/laxikajitapibozumafs5095.pdfIn PDF document text
    • http://hookup158.fun/bosch_classixx_washing_machine_servis27e5.pdfIn PDF document text
    • http://0fruits.space/chinese_calligraphy_font_for_macjjveh.pdfIn PDF document text
    • https://vinetiwufo.weebly.com/uploads/1/3/5/3/135305890/ffcd6.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/formal_letter_asking_for_annual_leave.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/cat_in_the_hat_costume_girl.pdfIn PDF document text
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_f30b4571c91b433da7211bf75c27c314.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f4f8595-a5aa-466e-b4fb-0cc155254f10/chicago_style_paper_format_no_title_page.pdfIn PDF document text
    • http://xopomumaralula.rf.gd/12343286381.pdfIn PDF document text
    • https://314a97e4-cc7b-499c-a999-42b15fb65c39.filesusr.com/ugd/fa4a73_ce8a512b5b4e432fa7ef18ddaf212de3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/492a14de-2d2c-45c8-a8f5-bf400ca0f739/sig_sauer_p229_nitron_compact_40sw.pdfIn PDF document text
    • http://jonokib.rf.gd/floral_brushes_for_photoshop_cs3_free.pdfIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_d1619af5c03b4aaa8baffc8e63f2a073.pdf?index=trueIn PDF document text

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