Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3feabecb25a01ce…

MALICIOUS

PDF

66.5 KB Created: 2020-12-30 09:51:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8f8050a6ad53967ab395dff6d43eaa90 SHA-1: 26692d86ba9f154a912ad05b36c79122f1fe270c SHA-256: c3feabecb25a01ce6c09b7317347a4008ccf7e08978dced6b85bf682fa812aea
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics identifying it as a malicious redirector and a link farm. The primary malicious URL identified is 'ggtraff.ru', which is likely used to redirect users to further malicious content. The presence of multiple Weebly links suggests a coordinated effort to host malicious content or redirect traffic. While no scripts were explicitly extracted, the PDF structure and link farm indicate a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://ggtraff.ru/123?utm_term=morgan+county+most+recent+warrants In PDF document text
    • https://retariluwefise.weebly.com/uploads/1/3/4/8/134858211/7645476.pdfIn PDF document text
    • https://zedevemekorux.weebly.com/uploads/1/3/4/7/134748521/wilix_gosidelodalik_sapudikajezo.pdfIn PDF document text
    • https://zupeloniz.weebly.com/uploads/1/3/4/0/134018773/7064498.pdfIn PDF document text
    • https://cdn.sqhk.co/pavetikedur/ejg0Clt/tag_faces_on_iphone_photos.pdfIn PDF document text
    • https://nazuvunu.weebly.com/uploads/1/3/4/4/134438845/e7b8fe6.pdfIn PDF document text
    • https://kedixezowudogaj.weebly.com/uploads/1/3/4/6/134618790/2560994.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/napejaxosinages/first_alert_model_no._sco500_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/project_assessment_questionnaire_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/rational_numbers_class_8_extra_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e3a21e-ae71-4a78-86cc-7ac07178de28/lego_chess_set_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/merrow_border_vs_hot_cut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/345c3ae0-1fde-4495-8a7f-316cb4b92245/tenafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b8003db-6237-48ef-a63b-78df1c3f9184/siluzariwomese.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_off0000c60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60E 5288 bytes
SHA-256: 58ba3b4ff7aeffe2a40be99b8e39f06b5f7dd4765d9d907ff490e3829608f0e3
font_01_sfnt_off0000d815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD815 10572 bytes
SHA-256: 65e2c5ddd199bf67296110d6b8b5226db8969f44babde0fb244d1ff140977f21

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