Malicious PDF — malware analysis report

Static analysis result for SHA-256 0592645161f8ccc1…

MALICIOUS

PDF

44.4 KB Created: 2020-10-15 22:00:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9eb3c03e36568b337c201b21d78a20ca SHA-1: 728f223c1f7e6f9bc7506c4c7fac31ae5018270d SHA-256: 0592645161f8ccc16c30ed219b2bd7ff23336ce6af1d6f7849043b845e6870cb
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/123?keyword=photoshop+app+for+android+free+download+apk In PDF document text
    • https://site-1043123.mozfiles.com/files/1043123/biromomu.pdfIn PDF document text
    • https://site-1041289.mozfiles.com/files/1041289/91269409387.pdfIn PDF document text
    • https://site-1048528.mozfiles.com/files/1048528/xewaloxewuvu.pdfIn PDF document text
    • https://site-1039604.mozfiles.com/files/1039604/sabidifupazadiwabedade.pdfIn PDF document text
    • https://site-1038627.mozfiles.com/files/1038627/minaxezolefovul.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/tixobenudofezibet.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/e52a51a4.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/b62684859bde.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/6431815.pdfIn PDF document text
    • https://site-1037850.mozfiles.com/files/1037850/pugase.pdfIn PDF document text
    • https://site-1038892.mozfiles.com/files/1038892/26592310665.pdfIn PDF document text
    • https://site-1044106.mozfiles.com/files/1044106/8342008670.pdfIn PDF document text
    • https://site-1042585.mozfiles.com/files/1042585/vinif.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/a07cdef3-e5ca-4e2f-8b82-119bbc504c1c/panaliletuzimimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc6ef91e-8dc8-4fec-bfe4-332889f72aa0/konono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd4727d2-4331-4eac-9253-1118fd52a76c/39824711392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f771ef2-e12a-478d-bccc-71ed99ef5e74/71756539788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e80c083f-dd28-4b46-8aa9-7995e3029a8d/59620964930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26ac363-ecb0-499d-9491-97825cdec88c/78826466256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff583f67-0f93-479b-9e7f-2c754111b309/zimome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a225128-676a-4be5-bc97-10d8aa544014/didofiwodosunixufizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1531/4330/files/vanezebematisamusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/27203544471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8997/2385/files/half_dragon_half_human_race.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_off00006edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDB 5288 bytes
SHA-256: 5fb708b509016551f553b021e9f8d000c6fecfacae4128cde4b81cf118b4f5db
font_01_sfnt_off000080db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DB 10328 bytes
SHA-256: 1f41afba02fd4c9e7d292b3a64d7821696acdbf367dc31787a451cb3bc28772a