Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d62892cb119e65c…

MALICIOUS

PDF

48.9 KB Created: 2020-10-27 08:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 22165977a43f44d35c3f3b38c88ba796 SHA-1: 25867780a856b4e68c4202d0bce4066a70ffb199 SHA-256: 9d62892cb119e65cecf727aaf8dedaf1606df5a0cb3ba0dacc88316ed51592a5
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to a link farm designed to generate traffic. One of these links, https://gettraff.ru/strik?keyword=best+neckband+headphones+2020, is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to manipulate search engine rankings or drive traffic to malicious infrastructure, likely as part of a phishing or scam campaign.

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 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.
  • 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/strik?keyword=best+neckband+headphones+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376358/normal_5f9054882a8e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f8afdb74fd88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f88b1cfdd6e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5f8d013e5cbd1.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/rujumomowixa.pdfIn PDF document text
    • https://sudewivozuv.weebly.com/uploads/1/3/2/3/132303071/6184590.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/7971148.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/bitelalenubi_vobotalevudobo_boken_mavesow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394077/normal_5f91e7d9771a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_5f8e7d277cc24.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/6656519c-e1a4-4136-abee-fee9a81ff56e/29335885652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f52cef9-b98b-42b1-9d2c-e9585815fa64/28160925336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38786b03-ff0e-4e86-8b93-efdb20e6d892/delonghi_dragon_safeheat_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05d4c0c0-8ce6-4e59-8213-c78b384ed9f0/tukipixovezirikomisexofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e092b573-a59e-4185-bf8a-103f70445d79/luzofosopezupubaponag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a7caca-54a6-4864-b2f7-532b9e8a3975/wevisojibanijoxunakofubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5431/7214/files/42197958403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8244/8541/files/el_camino_de_santiago_best_guide_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9971/5264/files/employment_act_1955_malaysia_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2808/6436/files/fiwifekupatulosux.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_off00007ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 5560 bytes
SHA-256: e8a4138a4a7e98830c76966c3f7a88946611281afa5ec651c21ddfb7709e03dd
font_01_sfnt_off000091bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91BB 11024 bytes
SHA-256: 83380580029bcbfd4af089a5240cc92e356634134ede73b7a98f99cb96ec4759

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