Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed723ac73e43d6d…

MALICIOUS

PDF

64.7 KB Created: 2020-11-21 03:35:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: abe7be3cebec902a135565d4b44e249f SHA-1: d5f6d9210fe9356c778a8fd51017eec701c86293 SHA-256: 5ed723ac73e43d6df37e3eae86b88dd5305479c9a8a022729e4ea02689a2249b
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing attempt. The document body, though heavily obfuscated, suggests a lure related to real estate sales history. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/123?utm_term=st.+louis+county+real+estate+sales+history In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/df815184-0e41-4799-b08e-e20f045e39d5/rinomirudipepalosugiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81973adb-d412-48ba-8393-f4fedbce2aa5/katejegoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dedc28f3-30c3-4200-b9ac-9061c80ac3ad/10207896609.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/tufunetofipezapita.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/gurijuluzekufunibadite.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/francisco_j_perez_mata_md_washington.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee336a12-cff5-46ab-b0b8-aefbe7723832/ligebuvetilatome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cfff358-07ca-42d5-905d-98193dc5bd53/52333141989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16bc09c2-122a-41a6-a6dc-44b2bb171c8f/gilmans_the_yellow_wallpaper_active_reading_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b4f532-8e0c-4a19-b846-9b169917f987/57450448201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9645b15a-8020-4dc2-b30b-fbbd54b8286a/patti_playpal_doll_repair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46e9b113-e50a-45fa-93dc-b65896f991e3/image_background_remover_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b23ac36-95f4-44a2-a8b0-6d4a259dc10e/76507986192.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_off0000c05a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC05A 5124 bytes
SHA-256: bdaa02dc197eea05cd0d3dc2a41971a402bf7c788f2e052eacdc1eff93a4ee15
font_01_sfnt_off0000d1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CA 10596 bytes
SHA-256: 5d189bf1c2fb128749bc40e5f6b1cc8afcef2b26f925028fc946f482fa7c38f3

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