Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50fb3f0456f088f…

MALICIOUS

PDF

47.7 KB Created: 2020-10-16 11:57:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a09de5b2c48a4dba28166b529a8a0bf6 SHA-1: 4249402257c391203e4af608337cedb711058649 SHA-256: d50fb3f0456f088ff5ba1f498905f779d40d76c4855d2f97ba42c430bb4cd476
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=optimate+3+instruction+manual In PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/xiwul.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/lepivo-gurexugin-zuzamibin.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/kedoxezezaj-temolej-zunemalavorun-mutelokowomimi.pdfIn PDF document text
    • https://nasinapalu.weebly.com/uploads/1/3/0/7/130739684/2011601.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/6497588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f87e1150184e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f875a4a185f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f8763f1a5c05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_5f8904d029b0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_5f890dab35f9f.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/1/0494/9570/3711/files/37978571252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1132/5082/files/nilewel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2681/1546/files/destiny_2_glittering_key_rewards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7957/4717/files/sizet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c49ad674-0d16-4994-853e-02c5feb1bbd0/titejeganobovevemeziladi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5415fc09-b5e2-4009-801e-9e3af9c44d8a/dixaxuxuxanux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/258a6f07-3393-4817-a13f-a9e76ac635f1/45051081516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cd80754-c5c0-4470-a7f1-e6ce373d1cb1/69891473486.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77959dc5-46ce-41cc-8788-b254ad2f0d3d/rasibudekimagazuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad332136-02e3-4de4-8bf5-9ce5ead1b568/muzupadiletupisesaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d66d2b41-23c2-4b03-8ce5-386c04258872/tusazowevowelameto.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_off00007b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B72 5272 bytes
SHA-256: 4157b00a66f40997000fe7d35b32ba4d6587ab0a77f5215c0eeb05079bcbd0ae
font_01_sfnt_off00008d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D37 10600 bytes
SHA-256: 2962a2e1363c3508eaa66ce92b2d1c152ae39c7adf5f8f2ed8168aac5ab6f9c1

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