Malicious PDF — malware analysis report

Static analysis result for SHA-256 10032f83917a69be…

MALICIOUS

PDF

37.8 KB Created: 2020-10-16 01:15:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c3da2a360203776fe97d01a0653d89df SHA-1: f2bb1ef1db8632cb69fe863d437281e4b523d85a SHA-256: 10032f83917a69be1d595694d0d44fd8419f30c8bac2c6e7dd6527645700fdaf
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=free+download+opera+mini+browser+apk In PDF document text
    • https://site-1038772.mozfiles.com/files/1038772/lemedodebavonuxer.pdfIn PDF document text
    • https://site-1038910.mozfiles.com/files/1038910/liwoxefagudaxobukesun.pdfIn PDF document text
    • https://site-1048485.mozfiles.com/files/1048485/gawisar.pdfIn PDF document text
    • https://site-1039307.mozfiles.com/files/1039307/fowozisu.pdfIn PDF document text
    • https://site-1043607.mozfiles.com/files/1043607/80796072032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f8720a452778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f8729d14b2f4.pdfIn PDF document text
    • https://site-1040359.mozfiles.com/files/1040359/nozuge.pdfIn PDF document text
    • https://site-1036869.mozfiles.com/files/1036869/39302887434.pdfIn PDF document text
    • https://site-1045384.mozfiles.com/files/1045384/munasawatubiso.pdfIn PDF document text
    • https://site-1043530.mozfiles.com/files/1043530/23111787396.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f88bc05b5e8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369310/normal_5f87aff57a918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f88baacde557.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_5f889afe9c8b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f88c95a30817.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374021/normal_5f88c28691de1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f88a195caa97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368503/normal_5f88c39cd0d39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f874eeab7b24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f86f556ca667.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6820/3430/files/tohru_adachi_social_link.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/are_case_studies_empirical_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1449/4614/files/tazosipopowuguwisivudif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/and_then_there_were_none_play.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8794/5622/files/detroit_grooming_company_discount_code.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_off0000551a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x551A 5356 bytes
SHA-256: 42d3bda9ee226e55d842b7f2e8742e48172e70ec29cf8193b028ef6ce0eecc6e
font_01_sfnt_off00006744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6744 9956 bytes
SHA-256: 5c15c58c627e74f2e8712371581308c5fc22d43213fe9580e7626eb8ef4c3ccc