Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3be526eb4da9b9…

MALICIOUS

PDF

42.6 KB Created: 2020-10-26 05:13:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 6fe219b2c3ac345ef0c18c4a4ef185dd SHA-1: accfe7433fb0c1c316332482b046681327530702 SHA-256: db3be526eb4da9b9afb2a70e9b8b1052adc723ef6741968130c57f0ca58056d2
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/aws?keyword=pop+design+catalog+pdf In PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/woduvotakoxare-kenakomo.pdfIn PDF document text
    • https://molisemopum.weebly.com/uploads/1/3/1/4/131437834/3120663.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/ac115b69bda4.pdfIn PDF document text
    • https://pufotawimudob.weebly.com/uploads/1/3/4/3/134380049/8783889.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/b628c54eef4e3.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/04b30.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/1c08ef26.pdfIn PDF document text
    • https://nugaginidej.weebly.com/uploads/1/3/4/4/134475369/4b31d2.pdfIn PDF document text
    • https://pefuxagofir.weebly.com/uploads/1/3/4/3/134359429/1752884.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_5f8ff22f53d1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5f93dc2d561af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5f891dae7e964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408976/normal_5f94d35967e40.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/1/0438/2107/2541/files/tefekegegiwinoniza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8881/7562/files/rijenamazagipagidixomogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7ef7f65-13b0-4064-8ad8-037ee3df1df3/7724804348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af8f157f-12b4-42d5-aad3-f38ddfba3680/lunajifofufusosiparexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7d6840d-aa19-4bdc-be0a-3afe8e599f0c/tefulubuwamofava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00560148-e728-4c7b-b052-8cef1a6f8481/38044588108.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/51007162060.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/calcium_enriched_foods.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/84549843231.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_off000069d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D8 5228 bytes
SHA-256: 5e82afc5a367238c1ff8f07c1c900b35d0d3bffb4dfcd87f8b9543bbdaef1e04
font_01_sfnt_off00007bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB1 9760 bytes
SHA-256: 753f67d350b9d6bc21ee122fc8fe6b19721a6ed9a5502eabf64e9ccb19553c44

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