Malicious PDF — malware analysis report

Static analysis result for SHA-256 4494a17eae9717bf…

MALICIOUS

PDF

79.6 KB Created: 2021-01-01 06:48:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c6f4e0a2d6da63ab075206d7e11f1c20 SHA-1: 9d3ba9091e00cf27566b2394ca4e287640b24d50 SHA-256: 4494a17eae9717bf3030595dd9f6f795f0b3f7cad45ef897dcb022abcbdf0f40
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ggtraff.ru/123?utm_term=domain+4+professional+responsibilities+examples', is the primary indicator of this malicious activity. While no scripts were extracted, the presence of a malicious link strongly suggests a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/123?utm_term=domain+4+professional+responsibilities+examples In PDF document text
    • https://static.s123-cdn-static.com/uploads/4501509/normal_5febdea53bbdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458417/normal_5fb2d54bb45a8.pdfIn PDF document text
    • https://cdn.sqhk.co/pitadewedobu/hOiizjd/animals_colouring_book.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/rakabexozu/dirovazepobowe.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/albacore_tuna_fishing_report_california.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/3_etoiles_guide_michelin_paris.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/miraxuda.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/import_spreadsheet_to_anki.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/6539462833.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/62098994825.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/13230773659.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/51412230977.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_off0000f9cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CF 5344 bytes
SHA-256: 1aa1f8b3d300c9c1d01cb0b2e0d24dc43cf5a49c94535a137d8890552283ab0b
font_01_sfnt_off00010bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEE 10844 bytes
SHA-256: 97fae0129b55e130e6bf798391192ed12bf09815b29c1d3b5bf268bf37d75964

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