Malicious PDF — malware analysis report

Static analysis result for SHA-256 703249feb18bd700…

MALICIOUS

PDF

68.3 KB Created: 2020-10-25 14:16:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 267734c497d32bae89a55584d733af87 SHA-1: bfbdfd245841bfcf62d9568840949f9709bd9578 SHA-256: 703249feb18bd700cf613e433e317e7834ae78c15696e583a15ae44162863108
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ttraff.link/pify?keyword=alcides+arguedas+pisagua+pdf In PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/pirudoriz-retidepixid-tusuke.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/8183936.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/marufotedusiniwej.pdfIn PDF document text
    • https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/6803929.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/rizagepadimoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379602/normal_5f8d11bf58a6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_5f93c54f63259.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403262/normal_5f93ea1d1faf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_5f896faa211df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f8af977d578f.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/4e62bca4882baf.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/9961a82d71f.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/9333333.pdfIn PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/dadul.pdfIn PDF document text
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/3855e1d15d47de.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/gupiwoj.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/kivirumu_dadoxizure_tanoxobumamo_xilevajed.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000bd43.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000bd43.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000f372.bin)
    • https://uploads.strikinglycdn.com/files/8f27c79b-08b5-4657-a102-50f9142e4fe5/67604616975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/becbdddd-50f6-474e-9563-cb08171c61f9/97322094591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2329c6fa-90ea-45d1-a192-0b934d3ac77a/28074101462.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bda684-cbdd-4ee5-bc17-caf02a81e1c3/kuxabaxarilat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/834a3826-9b3c-4a35-8e59-f2732e404323/70419916232.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92797e8a-567b-4e1e-bb79-5ab98a4766e8/nevike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2272eef0-5304-4ea7-b360-25f998a59a1c/42431209591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0395fa2-ce2f-442e-942f-801fea0eb1da/xulipakixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ffffb7-ce36-4794-868b-a13a8491e914/80767118535.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 extracted file (font_00_sfnt_off0000bd43.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD43 4896 bytes
SHA-256: 015da5e26649f28d6ac893c8130fa886726a737310086dd816424a2de0ac783c
font_01_sfnt_off0000cdf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF1 11540 bytes
SHA-256: ae7f33b5e690ca4c18327991fd67e4c64238f444193d773c1b00323722f46f31
font_02_sfnt_off0000f372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF372 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378