Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb4c3254c23ecc1…

MALICIOUS

PDF

33.4 KB Created: 2020-10-31 12:34:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 85f156c8f81f41a9ef1145a7b4729bfb SHA-1: 6c1df38ba7001d3653785405e45007ed57601c9e SHA-256: 7cb4c3254c23ecc18c90be9454bd142190d071d0031233349cebe4d27b1104f6
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/aws?keyword=gasland+movie+worksheet+answer+key'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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=gasland+movie+worksheet+answer+key In PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/9199367.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/79465003-4cfa-4de7-bdde-bd87b9c072d4/rijanoritorasumenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6829/2764/files/virolomufazixofur.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/litukeko.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/minty_codes_gamestop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/730f01a0-86be-45aa-9697-ed4d303e86e9/gunetugikuseramemafekifa.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/28477433132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6153/4111/files/exercices_sur_les_hydrocarbures.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/sbi_bank_po_syllabus_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef73eafc-e8ea-4141-8b2a-d7312bbb680a/xidosakozijebezunidevobi.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/jitogokixur.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_off00004606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4606 5412 bytes
SHA-256: 1397070dad0be53808471a36f6e1e492c1bbe3a17dc6922c2a873871c3e5cff4
font_01_sfnt_off00005857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5857 9664 bytes
SHA-256: c0dbb8b84418237f41a30e1c374bfed569642b9f87e399ed91ec6da714c0d5e4