Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e383e473c2f4768…

MALICIOUS

PDF

35.9 KB Created: 2020-10-05 21:21:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d160665e6d9abde547de82cbde52d868 SHA-1: e6d4b36e7fd07d2cb7431dcde024b345a77fb400 SHA-256: 9e383e473c2f4768440165983037e779f229fc5ee56eee5b753076306ffe29b0
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://gettraff.ru/strik?keyword=building+a+financial+services+clientele+pdf In PDF document text
    • http://wofukebo.lindseybimages.com/uploads/1/3/0/9/130969110/sevumetewotedebalano.pdfIn PDF document text
    • http://files.aussiesfbay.com/uploads/1/3/1/4/131438567/9682545.pdfIn PDF document text
    • http://rajesik.dhammasukha-asia.org/uploads/1/3/0/7/130739476/pefuvugovugurifalab.pdfIn PDF document text
    • http://minavip.oldfoxpenblanks.com/uploads/1/3/1/3/131384260/tatan_buwavivuwiwake_newofuza.pdfIn PDF document text
    • http://files.himburgelectronics.com/uploads/1/3/1/6/131636602/6768463.pdfIn PDF document text
    • http://files.emilyisaacswellness.com/uploads/1/3/1/4/131437685/e1d391cc.pdfIn PDF document text
    • http://files.mtclairmissionarybaptistchurch.org/uploads/1/3/1/3/131379113/fawiruviweki-vituxowavokonan-mewejezabojaw-mopobemuguv.pdfIn PDF document text
    • http://files.ten21lacrosse.com/uploads/1/3/1/4/131437515/kuporik_ximegerer.pdfIn PDF document text
    • https://site-1037044.mozfiles.com/files/1037044/papakanexetoxisabewekefa.pdfIn PDF document text
    • https://site-1039156.mozfiles.com/files/1039156/wazes.pdfIn PDF document text
    • https://site-1039140.mozfiles.com/files/1039140/kiwetosazuraxuvuzo.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/b390dd67-2bcd-4e4d-9ede-cda5ce64f20d/fowibunulurituta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11491b56-f35b-4f86-aafa-6a24d2c2c8be/98090452235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c12beee-9abb-4d05-a706-4d7e63d7184f/51875066833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f28165c2-fe6f-48f8-854d-a5ea3605b3cc/nemifasazovepokomuluj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b900ebd-b418-4d2d-bfc2-bb3d3b468952/likakixabojemito.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_off00004ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA5 5432 bytes
SHA-256: 9505629f1ff731f382a2074e34b09fe09298231e3830188b28e38c1065d163e8
font_01_sfnt_off00005f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F42 10400 bytes
SHA-256: 1ca8bc6e133f3905809bc2f528abfe95c18e7b95a822f520ed399a8528e05e4f

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