Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7fb1ce58c49670…

MALICIOUS

PDF

59.4 KB Created: 2020-11-03 11:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: dbdf747f5af7f0818252e6b84b824b01 SHA-1: 6a4546124c0d924da0c560e08859f3eeb24ba653 SHA-256: fc7fb1ce58c49670f1ff280897cac5a0c49cab6bafaa046f2fdf830a7c906c1f
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 and contains a link to known malicious redirector infrastructure. The embedded URL, https://ggtraff.ru/aws?keyword=autonomy+medical+meaning, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the presence of the malicious URL strongly suggests a malicious document.

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=autonomy+medical+meaning In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f874f52a7a94.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/0bd3e7eb7a9c9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_5f8dfbb886821.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374957/normal_5f8ec5c6b6752.pdfIn PDF document text
    • https://muvitaburire.weebly.com/uploads/1/3/4/4/134441723/8462701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419818/normal_5f9ae1224329b.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/36c49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374178/normal_5f9da3dd74fad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/libro_colorear_princesas_disney.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/mejodamuzuvuz.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/64684088857.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/how_to_convert_book_into.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/19388503690.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_off0000ac26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC26 5076 bytes
SHA-256: 7274971fcc9382c41daaf0e0ac794c31c0757e72597a7babd8aee9a26e8b2699
font_01_sfnt_off0000bd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD67 10448 bytes
SHA-256: 0464464d47b565c06051c10c8baea51af3974b04eb2cf1879d46c8dc3addaaab

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