Malicious PDF — malware analysis report

Static analysis result for SHA-256 0897d5ecba8052b1…

MALICIOUS

PDF

71.9 KB Created: 2020-11-11 11:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: e7ea22c73c5ef03af2a3df282efd01c1 SHA-1: 75659ab886a9da9af2f238462761339fe482f3c5 SHA-256: 0897d5ecba8052b1ec45f82e0b3a421e0702460703703136722679fdcab07bf0
244 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
  • 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://traffking.ru/aws?keyword=pokemon+tower+defense+1+guide In PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/kixenoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_5f9d0a1ccb0b6.pdfIn PDF document text
    • https://totobulamu.weebly.com/uploads/1/3/4/3/134310137/15bb23f17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5f99ca0f41e2e.pdfIn PDF document text
    • https://vunatoja.weebly.com/uploads/1/3/0/7/130738644/5458555.pdfIn PDF document text
    • https://bewupoterefi.weebly.com/uploads/1/3/1/3/131380107/74aa14804.pdfIn PDF document text
    • https://sodavamipe.weebly.com/uploads/1/3/4/5/134513083/3088534.pdfIn PDF document text
    • https://sutukukibefatu.weebly.com/uploads/1/3/4/4/134486522/vawobirowibox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409421/normal_5f9fb312436d5.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/a7f0ffd1-53da-4b5c-901e-8a0ea4839d6d/nurejunukuma.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/zotoxopovuvokewabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/955d4df5-2515-4cd8-b96c-6ad9e84d5ec5/rationalize_denominator_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/085907ad-65cf-47e3-addd-635e25adacd1/84283651265.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_off0000d933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD933 5192 bytes
SHA-256: 2fcfe8d4711bc85704fc0924b25a6b5f2a0a5b835134beca83d922447b23c80f
font_01_sfnt_off0000eaef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAEF 11196 bytes
SHA-256: 3d19a0107d389fb1cde68a6a7dec317048eb0ede4e166e8593adee1f088a6ef2

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