Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3cc0d304cc00568…

MALICIOUS

PDF

36.0 KB Created: 2020-10-15 07:31:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9440577ddaa2a492dace1c5411d32850 SHA-1: 9e1be631a05d85ccfe8cff56257a625fb895fd72 SHA-256: b3cc0d304cc0056819f2980b535f9192f2688f3ea134662a9c829462b5fa9f6b
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/123?keyword=simple+present+tense+affirmative+exercises+pdf In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/vovadigofovexuneze.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/126930.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bf4458.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/44d87feaf8ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f8700105f617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f8739c3d8a9f.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/dokufijaf.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/mikukinib.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/jajixakopokeru-zebosaw-xosevuzid.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/rizagepadimoj.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/0ed82ae9-b0e1-4206-a841-a726cc55009d/dizezukowuzuduzipum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c24e3c8b-d201-497b-a034-561ed0115c9f/ripekaludidudegemalujunof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b4782f9-180b-4ab1-8221-b6e84b44981a/31518119167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0114/7302/files/the_sims_3_mod_apk_offline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2380/4827/files/19385797283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8679/9782/files/wawuxasagirevilezar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5322/6913/files/50334351473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8860/4061/files/79684259636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9032/2630/files/state_of_texas_drivers_license_audit_number.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_off00004eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB4 5532 bytes
SHA-256: 5b201d8e7ec5d0b0094b02fdb53f5210e139009482456a4d3a410e9477ae72ac
font_01_sfnt_off00006164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 9808 bytes
SHA-256: 04d0948a6035c8d04ba3f2f075c44ec61d7ad148a67ecf6a57e8ffa15eb8bbdf

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