Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ab0e4b44026c69…

MALICIOUS

PDF

105.2 KB Created: 2021-05-25 14:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 390288402c9e6f234a61733788efad5f SHA-1: eec7e5223c885b0daa4b1bd97b9e8430acadd1f7 SHA-256: 48ab0e4b44026c692009b3184beca4fb27d1cd7ee0e5db2ff5fb3fcf80d4d9d0
264 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains lures related to payment redirection and brand impersonation (UPS), directing users to click on external links. The PDF also contains a link farm, suggesting it's part of a larger phishing or malware distribution infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 8

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://sedarujewajoto.weebly.com/uploads/1/3/0/9/130968957/wepul.pdf.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://kuzutuzo.ru/strik?utm_term=air+pollution+and+control+engineering+notes+pdf PDF link annotation
    • https://sedarujewajoto.weebly.com/uploads/1/3/0/9/130968957/wepul.pdfIn PDF document text
    • https://guxovegetixewaz.weebly.com/uploads/1/3/2/3/132302910/bc1cad97958d6.pdfIn PDF document text
    • https://wuvipovuzodex.weebly.com/uploads/1/3/4/8/134846945/5565399.pdfIn PDF document text
    • https://xulakuvoloja.weebly.com/uploads/1/3/0/8/130813987/pixarujarejosek_xojiramava.pdfIn PDF document text
    • https://taduvovu.weebly.com/uploads/1/3/1/8/131871704/tewuxagupasenofu.pdfIn PDF document text
    • https://wedebiki.weebly.com/uploads/1/3/0/9/130969436/dewomekajudukuxiju.pdfIn PDF document text
    • https://xewuligatojijow.weebly.com/uploads/1/3/5/3/135395235/xijajusuvoxif.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/nevowimo/linelesixu.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/40034499016.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/viber_for_iphone_4_7._1._2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33651f3-c705-4b33-8464-59194c29bd39/nedejatogewu.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/corbettmaths_answers_5_a_day.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/witozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9358e61e-928b-4cc9-83ef-97b3c9074b18/tiputegojajafizatufipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/587c6a32-cad0-4261-b8f7-ecb908ba4706/degipiveku.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/firex_smoke_alarm_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/65115663645.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/72358442423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35d660ed-f909-4061-bf08-55d6c842cd94/pusakuwij.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/60583758380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d60e7d0-7a8c-400f-a92f-2d6dde198c25/lizobel.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/jakuwobe.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_off00015ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EA2 5312 bytes
SHA-256: be3cb4eb82c23667ea4b21c47c8ea55304d7695aae90feeb499978e9a8a97d54
font_01_sfnt_off000170c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170C2 11296 bytes
SHA-256: dc2f916c50090f9375ad5c5a9e142e5eb41463fdb7524d77d438e9994db6f7be

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