Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4199d0c0613c9b…

MALICIOUS

PDF

69.8 KB Created: 2020-11-11 05:45:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e8a7aba33252845aaba186ff3adc4aff SHA-1: a302c31e55039a84f281758cde6c7ce00f9429ee SHA-256: de4199d0c0613c9b4fcf093c5b4b929827a08da87050ad7e51100fcec9803e70
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a phishing or spamming campaign. The embedded URLs, such as 'https://trafffe.ru/aws?keyword=steel+dragon+guide+rs3', are likely used to direct users to malicious or deceptive content. While no scripts were explicitly extracted, the PDF structure and numerous external links strongly indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=steel+dragon+guide+rs3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408701/normal_5fab2856822a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404514/normal_5fa870b1485e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421048/normal_5f9a3c9c8a045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380876/normal_5f918927350f5.pdfIn PDF document text
    • https://livekurot.weebly.com/uploads/1/3/4/4/134443702/4418829.pdfIn PDF document text
    • https://guzuzixud.weebly.com/uploads/1/3/4/3/134357052/3946333.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/widofafane/2-2_practice_conditional_statements_prentice_hall_gold_geometry.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/646-517-7499-7370_is_true.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/69458284613.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/step_2_toy_box_with_shelf_pink.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/ddlj_full_movie_watch_online_hd.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_off0000d4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D1 5260 bytes
SHA-256: 08d5032ee40d470b771a18b75d8c60e5cea658aef8f95b1d375b5efb35487694
font_01_sfnt_off0000e6bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BD 10548 bytes
SHA-256: 787bc4b94f15f081cf473f9ddb673a03651d62b1aabe4bdb89330d0038f23c4a

Open this report in the interactive analyzer, or submit your own file for analysis.