Malicious PDF — malware analysis report

Static analysis result for SHA-256 7196f48f6632a5db…

MALICIOUS

PDF

46.4 KB Created: 2020-10-15 06:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 38c6eb342085e8476dd9ec178f98d395 SHA-1: ea9807c1b152bbcfaca7fb918616151e8ffc6067 SHA-256: 7196f48f6632a5db07a23b33e4c12e159039bfdac7aabc78fab619258549ddc8
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=guidelines+for+urine+sample+from+catheter In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f874adb53f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f87247f7a7ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5f877b441976c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f876864c7b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f874f2e2ab6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f87919b53325.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/7dafc251cf7.pdfIn PDF document text
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/nogijazipa-gokokawur.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/gijorogonutuxelo.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/7d7b6617ab8.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tifuxasorelav-sunagutigu-gikisifexixabot.pdfIn PDF document text
    • https://mokitigek.weebly.com/uploads/1/3/1/6/131606839/8959612.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/gikunovesizaf_najitimewosop_fexok.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/wozumadaku-mukevewurovebu-nefebo.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/af6de916-83bd-4776-8759-36c4fe22079e/muvavopudevurobuwisukogek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/547b32b5-28a1-4881-a0ab-f3c58f80fe19/lasizenifilim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6a7baa4-543d-4eea-9e39-eee64eff2d33/16832646332.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22a91d25-0914-46cc-9400-61a9c6ee68bb/fadiruli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00ed5545-8328-48de-a1b6-b0fd2a7575c6/87229142834.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b0fc367-c9e2-4d63-9e6c-9449e829e4ca/derowijigigamawowixerop.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_off00007702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7702 5428 bytes
SHA-256: b42575fbf96b27f94833afb8d6a0d06072611b4c4915a770028b0f674b26131f
font_01_sfnt_off00008940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8940 10436 bytes
SHA-256: 926238437914cfeb36df746f391fa69862f558781d43c9f6708ee41bd3c0fd2a

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