Malicious PDF — malware analysis report

Static analysis result for SHA-256 0768be074da21e80…

MALICIOUS

PDF

68.0 KB Created: 2020-10-30 18:13:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2b0a203c3bf3523adc7279d0e64df0c4 SHA-1: 95452a02a922553e1fda1f2fb446cefec7005f26 SHA-256: 0768be074da21e800531ded3e2b14748d38da87ccf70b911a89406d775f3c4b5
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute content. The primary malicious URL identified is https://ttraff.me/pify?keyword=ode+on+a+grecian+urn+summary+line+by+line, which likely leads to a phishing or malware site.

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://ttraff.me/pify?keyword=ode+on+a+grecian+urn+summary+line+by+line In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_5f8dc17691925.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/27f3c2eaa0c.pdfIn PDF document text
    • https://gasodugolulo.weebly.com/uploads/1/3/4/3/134375537/rinedub.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/tesasubawalozan/21458341157.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/hikvision_2mp_dome_camera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df45b954-6c20-4681-8fae-52c513c61acf/baselusixexedamevux.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/caballo_de_troya_1_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/ncert_biology_book_class_12_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/091bf44d-e72e-4909-968c-9e10169cc931/gipozisosizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b602c30d-70b4-4198-add8-95dee560155d/87793527590.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_off0000ca12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA12 5528 bytes
SHA-256: 5d042cc733fdcc975f38e41c6802d2f7f3d30418c9694bfca89b3e022d254c76
font_01_sfnt_off0000dcc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC7 11580 bytes
SHA-256: a27fb5f4109dbcee62460f29dc368b4e4e9f5ae661d40c8fc8f8f625aa4748e5

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