Malicious PDF — malware analysis report

Static analysis result for SHA-256 958d767e5facb299…

MALICIOUS

PDF

47.4 KB Created: 2020-10-14 22:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4aca9217580e20cdd4b9d11e0e8e1932 SHA-1: fa32a78ed2d097b4cd4722110a2e889485953670 SHA-256: 958d767e5facb299fdab33bd30c30bdbbeaef5007a04fba19bdea6dd9255b0fc
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://ttraff.club/pify?keyword=practice+guidelines+for+management+of+colorectal+polyps In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f8713364a927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f8749f37e67d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8737d8417db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f873a8d9f436.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f86fea4421ac.pdfIn PDF document text
    • https://site-1036879.mozfiles.com/files/1036879/31269156583.pdfIn PDF document text
    • https://site-1041085.mozfiles.com/files/1041085/79281530519.pdfIn PDF document text
    • https://site-1037164.mozfiles.com/files/1037164/nuvuzetojexagoba.pdfIn PDF document text
    • https://site-1041207.mozfiles.com/files/1041207/56408857061.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/kezupukono.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/bilozosagadawetero.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://site-1042018.mozfiles.com/files/1042018/61405322328.pdfIn PDF document text
    • https://site-1043289.mozfiles.com/files/1043289/gulevipasijupitekel.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/42dde9aa-ab35-4870-9043-c7481c95991d/ludifelideza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c112442c-3168-4111-8ccd-57114571712f/34941495215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11712709-8de9-41fc-a528-2ca499429168/9327167733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0649/3350/files/mizepanawovejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/anthon_berg_dark_chocolate_liqueurs_26_pieces.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9191/3632/files/82957698657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4395/2539/files/lakizirep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4263/3890/files/rumoguwurevorosabo.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_off00007955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7955 5576 bytes
SHA-256: 7107e040343e4bf274bf24d4c9af7aaad2690eac9670d88d2f028c2fa7702163
font_01_sfnt_off00008c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C36 10544 bytes
SHA-256: 3798010449d9f6364b3bfb68ebf63fc680c21b4c5ac64ab29594cb48201809a9

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