Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccda25176e5ee4b6…

MALICIOUS

PDF

67.8 KB Created: 2020-11-14 10:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5e42c312e6941fe06d07c6223c807bed SHA-1: 62a78560c8647f072a68e6f65ce0e1bf57ea7160 SHA-256: ccda25176e5ee4b6227bdc63d5445be8d799f1d49a070f418490516fd7c17b9b
222 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with at least one identified as a malicious redirector. The heuristic 'SE_INVOICE_LURE' suggests a phishing pretext. While no scripts were directly extracted, the PDF structure and link farm indicate an attempt to drive users to malicious infrastructure, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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
  • 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://traffine.ru/strik?utm_term=the+unbanking+of+america In PDF document text
    • https://kefozonijufan.weebly.com/uploads/1/3/4/6/134689321/fe1d63f4.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/gezumuwavizegekis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5fa429bdc5681.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_5f8c9a0703e7f.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/ropuba/a_l_aburrir_clases.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/wifepidodusogex.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/purolator_oil_filter_application_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/250b1698-2234-4e4a-9e16-e71e67660543/80721091494.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/85176030997.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/tetegoradav.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/tvcatchup_app_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/biopsychosocial_assessment_form.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/sql_cross_apply_vs_inner_join_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/appalachian_trail_guide_to_new_york-_new_jersey.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/kozidamiwobamepuwozuxebi.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_off0000cd47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD47 5236 bytes
SHA-256: db99ea0a38147e1eaea2509eb13e0bd7eb1f65547bcae2331474bb97d2a65949
font_01_sfnt_off0000defa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFA 10444 bytes
SHA-256: 43ec5d5d1ad3bbb5d8dbdbc1bdd2ffe2c22a6dfe28efdb4ce317465d86f8cb93

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