Malicious PDF — malware analysis report

Static analysis result for SHA-256 182983edb8e5868b…

MALICIOUS

PDF

43.8 KB Created: 2020-11-06 18:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 27c89fcc0d417133863907132c359c82 SHA-1: 56ae5c4724943070d381aad730fb7f17b86bc025 SHA-256: 182983edb8e5868bf693c33c7e54aa86ac1e923f03e83c9ae44426218799bec2
96 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as search results for 'robux gift card codes'. The primary malicious URL, https://trafficel.ru/aws?keyword=robux+gift+card+codes+list+2020, is embedded within the document body and also flagged by heuristics. The presence of numerous external links suggests an attempt to manipulate search engine rankings or direct users to potentially malicious content, aligning with a phishing or scamming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/aws?keyword=robux+gift+card+codes+list+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5f8bfa55c7194.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403418/normal_5f92532f225e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f88c18c47424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409997/normal_5f94b3b8c2ae6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367950/normal_5f887ba489d3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_5f8914d90952d.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/f5af9db7-5ffe-435f-a5cf-c13ff41017f9/guacamaya_s_mexican_grill.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/hiscox_guide_for_baptist_churches.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052a5716-4f36-4cda-8361-c9e7d3fa8f2a/80149942698.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/audio_amplifier_design.pdfIn PDF document text
    • https://nakagaparob.files.wordpress.com/2020/11/91302444722.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/genetica_medicala_thompson.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/adaptive_control_tutorial_petros_ioannou.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_off000069a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A9 5680 bytes
SHA-256: e25b6507dab687833b8bdca236289d5b73e7df36be9a3b334094af9006cc5bc3
font_01_sfnt_off00007d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1C 10872 bytes
SHA-256: 6f9fa6af22ec3b0a9327f8f23000f64ad9473e08da53f57fad201fd5d050c256

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