Malicious PDF — malware analysis report

Static analysis result for SHA-256 babbef8821b7954b…

MALICIOUS

PDF

34.1 KB Created: 2020-10-31 03:20:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7231c8c3b8baa27201645353094b80cf SHA-1: bc1bcddfdbf7c1c6520962be0b04719c018fb5ce SHA-256: babbef8821b7954b921d026d7045eb0c22a3f841b37909d50ebc6951da76c9a9
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains an embedded URL pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/aws?keyword=buzz+bee+toys+guns In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413570/normal_5f94a2e72925c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f9789e51a758.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383802/normal_5f937ee210c41.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/1/0432/6873/5140/files/integrating_quotes_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7777e9eb-df5b-4578-85e5-708e8d75a557/bhagavad_gita_slokas_in_sanskrit_with_meaning_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/catalogo_ikea_2018_usa.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/blue_ombre_xpression_braiding_hair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/427dcb6c-a316-4f26-8632-116a952c696f/nivowonavexego.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/74973924656.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/aiag_apqp_manual_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/vubuwereluvev.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_off00004879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4879 4856 bytes
SHA-256: 08fca7895f208d56da558d2e59471998ff0edb84e09319228deb544ebb3aa5e8
font_01_sfnt_off0000592c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x592C 10340 bytes
SHA-256: ec21e7f0f80b20558545fa3809428e30caf255755117390366c4769ca3d9f0cd