Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e691c4d9ab0eed5…

MALICIOUS

PDF

37.8 KB Created: 2020-11-03 14:16:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b01cdc69957315d4fc01310d3a358f21 SHA-1: 1e3aa1b31e1a0bd2444666a9a5d2a0108603a009 SHA-256: 2e691c4d9ab0eed56a29f75665fd8398f695ca14b357f4cdb3353de07c06dc99
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link farm and redirects to a known malicious URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the target URL and keywords related to real estate searches, indicating a lure to disguise the malicious redirect. The presence of multiple external PDF links further supports the SEO poisoning or link farm tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/strik?keyword=zillow+homes+for+sale+massachusetts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5f8ed1e738e59.pdfIn PDF document text
    • https://kinimozudex.weebly.com/uploads/1/3/4/4/134498073/ee2e1734c7ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450154/normal_5f9e857834146.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/kunexafaw_wejolafuwezejon_dulivotopasom.pdfIn PDF document text
    • https://gedaxafi.weebly.com/uploads/1/3/4/3/134340736/vubanabunuvokim_sutokonopizorix_kuxowo.pdfIn 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/02d1fe0d-f9a9-47d3-84da-2fa87981c5ad/lanovaliwatefazovi.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/statistical_analysis_of_geological_data.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/tafetuboxilivovofupuju.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/govilakarexipumidubufetek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/561e8240-2d9f-4d99-8eb4-4d7df4074346/guion_para_pastorela_comica_corta.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/31068695360.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/accumulated_earnings_tax_calculation.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_off00005531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5531 5168 bytes
SHA-256: 7141f5115480d6316ac630526d28b47e6177e354e4c9933f758bec85d46f52e6
font_01_sfnt_off000066aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AA 10480 bytes
SHA-256: 0b6ad2972a4037bed4abddd724cad203cb0bf964df8c22bd74b484ccb016d33c

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