Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b650aec573d5afa…

MALICIOUS

PDF

38.7 KB Created: 2020-11-02 12:19:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1ccecd40740d6cc99789c2f05eb8ae08 SHA-1: 40b76ff7ab54d5569ed12076c3247e7de6e335a8 SHA-256: 2b650aec573d5afa738325f3069d4ab9ee3ada094998ff65ac138173db26222f
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains heuristics indicating it is a malicious redirector and a brand-impersonation credential phishing lure for Outlook. It directs users to a URL that appears to be part of a credential phishing campaign. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://sonujesenusa.weebly.com/uploads/1/3/4/3/134344018/runibiregubafo-talatu-guxuxabapo.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
  • 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://cctraff.ru/123?keyword=outlook+hotmail+inbox+open In PDF document text
    • https://sonujesenusa.weebly.com/uploads/1/3/4/3/134344018/runibiregubafo-talatu-guxuxabapo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0449/6541/files/wewesofotojebonamuto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e67b5997-49a1-4fc6-85a0-3bfbbff05c1e/white_pages_davis_ca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6163/2920/files/play_store_android_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2762/7676/files/dragon_nest_m_apk_sea.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/588500bd-f655-474c-b537-7adf0cf5278e/vuketusimiwolifisugaxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/6483/2412/files/74708486864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/11276006624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/barty_crouch_jr._harry_potter.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_off000057ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57CA 5084 bytes
SHA-256: 7363042490af3a2113e0346c92f0c124efb72b36da950c19ce1310dc61f77411
font_01_sfnt_off000068eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EB 11020 bytes
SHA-256: 5da7442cd5048aee695d1dd9cfa3e177c5d6a1ca0ac4b9c1f0e6a625a5357521

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