Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd023be6899bf4e…

MALICIOUS

PDF

40.6 KB Created: 2020-11-06 00:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b390d7da48fd7637945493c42c255898 SHA-1: 2dd8b44a4c451b55f281ac1b12fd2f3f8cd93fbe SHA-256: afd023be6899bf4ede6be46e77ebd6fff3e820b489b03db4ba81d58901955f5f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a deceptive body text and a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. One of the primary URLs, https://traffset.ru/strik?keyword=ridgeview+middle+school+news, is suspicious and likely part of a link farm or SEO manipulation scheme. While no scripts were explicitly extracted, the presence of numerous external links suggests an attempt to redirect users to potentially malicious content or phishing sites, aligning with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/strik?keyword=ridgeview+middle+school+news PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/67d02f91-7c6a-4caf-9633-0a5996f5202b/ragilis.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/1985_schwinn_le_tour_luxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9783/1588/files/chart_of_accounts_odisha.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/depth_and_width_footing_for_brick_wall.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/powerpoint_jeopardy_template_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/best_300b_amplifier.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/50282730658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/7917/7635/files/dlab_study_guide_army.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/ramadan_calendar_2020_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e6f204-b6a9-41b3-844a-f15530c329bf/zifudozatexeropilu.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/tupodarovejubemegibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1c72ae-e318-4dc4-8140-9f247683602e/kolanenuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f911ff5b-2f5b-4a62-9dbe-571bce89999e/40389967410.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/how_to_spell_nocturnal_emission.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_off00006208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6208 5204 bytes
SHA-256: d4c29a912eee9fc424b7490300e17fabf15b03c6b94455d9ee3ba70b87507f14
font_01_sfnt_off000073b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B9 10056 bytes
SHA-256: 49eb77df0a547ee8e31025799f4afa989d7eeb04c395a14e99ad4db3cc163a6c

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