Malicious PDF — malware analysis report

Static analysis result for SHA-256 72882720261b8ad9…

MALICIOUS

PDF

45.8 KB Created: 2020-11-06 11:52:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 5639c0b7052425eb3c16b7f0a8ec8144 SHA-1: e887ae88953c8e2db9d0b3b9b6df73688b0613be SHA-256: 72882720261b8ad9e79a9ff9c4de6fb84eabdaa8c9ef62bc236b9ff72b2ec04b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffking.ru/aws?keyword=mupen64plus+fz+apkpure In PDF document text
    • https://zemuxarasojutin.weebly.com/uploads/1/3/4/3/134374283/weturefujefizolawa.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/3175599.pdfIn PDF document text
    • https://vataviborabedim.weebly.com/uploads/1/3/4/0/134012391/bizajiwuwoxeb-wopewapa.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/basubovezemakutuw.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/zedomedo.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/2ffa4.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/77af1846b7b45d.pdfIn PDF document text
    • https://gataforebulor.weebly.com/uploads/1/3/4/3/134337884/f40720b55b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e1f5492d-37d8-4a92-aaa0-0ffbc5aa382d/32562146547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f4c22a-0bf5-4b97-b918-7c4b9277a6f0/nidumexis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/176cc116-ce7c-486c-ad68-3c6cb08a95d9/henrico_county_math_modules.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/gekogerofukubegijojalurar.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/lab_report_rubric_cer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A7 4900 bytes
SHA-256: 4f04847049bee6459ac309cd0741c02b7e610bd08ca06afc3304f6a58ffeb1f6
font_01_sfnt_off00007a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A66 9932 bytes
SHA-256: da27aa92f8b5089abf9588857f215f4a35adf8ba0940569c6827acce2fef3017
font_02_sfnt_off00009c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C6C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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