Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ff4e66f23f28da…

MALICIOUS

PDF

79.2 KB Created: 2021-05-21 17:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 5b64f4f6e56a22a0cb7df4a8e571a8f7 SHA-1: 289c5616eeca7ecc4cef22e739b51529c58e6816 SHA-256: 58ff4e66f23f28dabfa202217df5d9f9d8d6269daecf5a0a37671230448203be
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/strik?utm_term=%25D0%25BA%25D0%25BE%25D0%25BD%25D1%2582%25D1%2583%25D1%2580%25D0%25BD%25D0%25B0%25D1%258F+%25D0%25BA%25D0%25B0%25D1%2580%25D1%2582%25D0%25B0+8+%25D0%25BA%25D0%25BB%25D0%25B0%25D1%2581%25D1%2581+%25D0%25BF%25D0%25BE+%25D0%25B3%25D0%25B5%25D0%25BE%25D0%25B3%25D1%2580%25D0%25B0%25D1%2584%25D0%25B8%25D0%25B8 PDF link annotation
    • https://woxogobigevi.weebly.com/uploads/1/3/0/8/130814596/kididibejinuw.pdfIn PDF document text
    • https://tukadivi.weebly.com/uploads/1/3/2/6/132695248/tijekakefipedik.pdfIn PDF document text
    • https://jamibada.weebly.com/uploads/1/3/1/1/131164428/jekibujunofafurom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_5fe7d0e8c5dc7.pdfIn PDF document text
    • https://ramaxudefe.weebly.com/uploads/1/3/4/0/134042793/c7a2a14f0e7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379038/normal_604d1fc4887c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480891/normal_60319394ae776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427105/normal_602785cb00df6.pdfIn PDF document text
    • https://mezemefi.weebly.com/uploads/1/3/1/3/131384279/wulasodasawese_runowuwosij_buzabod_vugedude.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413966/normal_60089a5ba5f2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454543/normal_5fdaef4c67b37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453730/normal_6035e1669bad1.pdfIn PDF document text
    • https://raguloduw.weebly.com/uploads/1/3/4/0/134041620/2953248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408704/normal_604fcc6eb90d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413456/normal_601421ef966b8.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/28ab04ee-e6e2-401c-a828-61c0ce18feb5/90522956807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33e4f011-74d7-49b2-86b1-57231e8da28b/dragon_ball_xenoverse_2_character_creator_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23e3665d-cc2f-491c-acd9-2fd18e60a179/63951465021.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_off0000e59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59A 5908 bytes
SHA-256: 4213a0b0521d68adbff73540d6c1951926e304cb7db44808d293a295e7bf0c48
font_01_sfnt_off0000f942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF942 16536 bytes
SHA-256: 4ca33b5737c04b1f769fba8a5e1686e8c32e75bd979c6459bfd828aec976fb54

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