Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b8e56d15cbfdb0…

MALICIOUS

PDF

42.4 KB Created: 2020-10-05 11:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6801d88e36830e4812911f84fd73c50b SHA-1: e05a86dd76cc2c65d095f0e5c98c198349ce3fb8 SHA-256: 89b8e56d15cbfdb097fa86d3386395c2070c478b0aa1d13c5fa0375bcadd267f
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=adrift+book+pdf In PDF document text
    • https://site-1037071.mozfiles.com/files/1037071/63392648152.pdfIn PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/12631659789.pdfIn PDF document text
    • https://site-1038338.mozfiles.com/files/1038338/nopoj.pdfIn PDF document text
    • http://donura.cleansheetsmfg.com/uploads/1/3/2/7/132740763/mikivepow_welevutox_nedolida.pdfIn PDF document text
    • http://putej.lightbulbcoaching.co/uploads/1/3/0/8/130814225/wotosixipejowobov.pdfIn PDF document text
    • http://files.jerseygod.com/uploads/1/3/1/6/131606335/xujiwajegono.pdfIn PDF document text
    • http://files.weisbeckerscholarshipfund.com/uploads/1/3/2/6/132681250/aa1ccf97d1d.pdfIn PDF document text
    • http://lonaz.newlandfilms.co.uk/uploads/1/3/1/4/131407408/8c0a7efac66e40a.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/be81b0e8-4e74-45f7-8e59-f1157396d7d3/43490370997.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d166607b-d8f8-4c7b-9296-44d87190b00e/94071510849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8ee8075-c87f-4c32-b18f-1a7e7d012c86/jifuditir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f387086-927b-4f8d-a780-b77619342cba/tarikimilasuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3814/9274/files/99142592059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/51990767035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/dr._marlene_merritt_lisinopril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8597/8518/files/senevosoruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/8536/1049/files/60720855251.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4E 4808 bytes
SHA-256: 0632da35d5e6ddc69b16704a8c0d30f07a83548354adb9699c3af8d84a114d76
font_01_sfnt_off00007ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB4 10076 bytes
SHA-256: 6ea63cea3ab0b738c4e4cde80ae5f9dc81bd2b106a775d4888235cb32fb7b5cf

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