Malicious PDF — malware analysis report

Static analysis result for SHA-256 e80e8404ef158914…

MALICIOUS

PDF

37.1 KB Created: 2020-11-03 06:06:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3795a34ac253555a5fd34356eca8ffe4 SHA-1: 1f6cc62371b614c05a48ce29a35d37d35f2f87e5 SHA-256: e80e8404ef15891458bcb0c5fe23f00e2a958d983e116e7f73eda72b8292a454
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?keyword=19th+wedding+anniversary+gifts+for+her In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369664/normal_5f9908745c17b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373769/normal_5f93d589020f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369190/normal_5f994de3cb369.pdfIn PDF document text
    • https://zekasujiminog.weebly.com/uploads/1/3/4/3/134366003/bakinonififuko.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/wewukuxelowegovugo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373987/normal_5f9ae9920c75a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405953/normal_5f9d695352553.pdfIn PDF document text
    • https://masogipu.weebly.com/uploads/1/3/1/6/131606875/jurazafapevozel.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/bawexebawakikasur.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/638e4ebe-da55-4bdf-b473-1b0db9593319/namakijuxuvakasexerawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6929/9101/files/plant_life_cycle_worksheet_3rd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/9350628863.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_off00005340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5340 5504 bytes
SHA-256: fc04bec0f11d2c14f7c35e288206cc9e08c4e71d0edd88e1833ed9685635356b
font_01_sfnt_off0000661a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661A 9836 bytes
SHA-256: 4f3f9c7632be2096a1f120882671c06313efc14f426f054a31ceb0d3a116f1f7

Open this report in the interactive analyzer, or submit your own file for analysis.