Malicious PDF — malware analysis report

Static analysis result for SHA-256 08cfeb0a27a8640f…

MALICIOUS

PDF

55.7 KB Created: 2020-10-15 14:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b826df260664502f37fa269dc5f873bc SHA-1: e04ff0df9672c23c58f5cf6e59e07abfd102ba70 SHA-256: 08cfeb0a27a8640fe1c461d3267b48f4c9d028384f3d2798d1e4c297fe3b46db
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://cctraff.ru/strik?keyword=desired+capabilities+in+appium+for+android+example In PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/bibesekukemugedovofa.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/9611648.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/adc32d3ffa92831.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/9639254.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/6497588.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/9308642.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/mikukinib.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/xenojefomil.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/583a82c9-75e5-47d4-99ce-c15b9592931f/lizisadamukofini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0622d50-28be-469f-95e0-40f842da75d9/worekolofajojijugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5119/9895/files/comprehensive_animal_hospital_lansing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3500/2533/files/blank_business_credit_reference_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8530/7297/files/tomobevezilimaravabeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4438/1082/files/79270067802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3066/1278/files/kofuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e64ef93-694b-41f9-ac52-6abc1fc3b32e/vujefawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da15d8d9-ba93-4fb0-8c58-89935f8762c1/42189462293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a148d5c-3a60-466a-ab10-aa7c7d2ea4cb/81706058216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77ff2593-bcb9-4eba-a31e-dcaf41597a8a/94034065396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8af0a0b1-ec73-477c-a12f-eab31b972758/58605373925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a6875d-bdcd-48be-9e0b-fc565c289c25/18417603089.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83fa74c3-158f-4924-8196-ca87ceac2d8c/kotogeramudatobolujegimi.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_off00009a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A9E 5508 bytes
SHA-256: ae8633e4e318d724775cc67f1410861c3eb670315180e44ef1bdbc128ba1101c
font_01_sfnt_off0000ad39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD39 10416 bytes
SHA-256: 04b7d80f0ab5efb2173309739fc9fbde4df3404f1dfdb0cf469066c39c50d5a9

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