Malicious PDF — malware analysis report

Static analysis result for SHA-256 88cac4e0b3611e33…

MALICIOUS

PDF

43.7 KB Created: 2020-10-26 06:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8e876bb985b85bbc280c7dc383e14a84 SHA-1: 662b2818546e8fcc7ad278ec4d50b12b1c6e58de SHA-256: 88cac4e0b3611e3315fd022fe1cbd9eede6caebc60f1c4c1149cc4ef9d43023e
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://ggtraff.ru/aws?keyword=alchemist+summary+pdf In PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/9900ae60563.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/f390996b3af2.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/wunosaxigorurig.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/tivemubi.pdfIn PDF document text
    • https://sewuvemap.weebly.com/uploads/1/3/4/3/134377394/2186235.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/7a0fe5c7-9019-41e4-82e1-7568531136dd/laxikidudevokiforeripo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25584b33-1d2f-4c64-a6b5-1184386e3080/nidajafimuposuvaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d445a139-223f-4a38-9ec0-ca3070ae187f/gozizanexozuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/746047f3-6763-4544-a09f-10fb9ab552ed/jibixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a832fb3-910e-4817-9fbe-d27997114c35/tubivogerigodomesoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/76021564292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6668/2261/files/personification_worksheet_grade_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6259/1387/files/the_lithosphere_is_composed_of_one_tectonic_plates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/rusejun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2092/6107/files/gin_television_and_social_surplus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0056/8221/files/8226615391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8229/4456/files/instalar_impressora_microsoft.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/wogazewodufiziwutixizid.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/area_of_rectangle_and_triangle_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/the_hindu_english_news_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/emotional_intelligence_worksheets_for_adults.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/case_carburizing_process.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_off00006b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B15 5484 bytes
SHA-256: d0c1eaa5ba40e8a1ea332d57f30c0c8d27bcb1a2c7f747ec094056791ee86337
font_01_sfnt_off00007d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9B 10836 bytes
SHA-256: 71968eb9fe5403b2e0a169e073f664031a6bb740b01c810929fcad308318d740

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