Malicious PDF — malware analysis report

Static analysis result for SHA-256 6980a6a2ef55df07…

MALICIOUS

PDF

54.6 KB Created: 2020-11-01 18:17:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: fbc7cbf62eea725e7fcdf4027338ed3e SHA-1: 1b495c4446c7d472cd9311e114c2965fd8a4b0d2 SHA-256: 6980a6a2ef55df07105816e0cab37715e4f9080666ca643ae5880bb2d55a4622
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://gettraff.ru/123?keyword=entering+house+dua'. 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 serving as a lure for further malicious activity.

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://gettraff.ru/123?keyword=entering+house+dua In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5f8ca8977fe5f.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/mowitulagaxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408871/normal_5f9e62d83d651.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/mamizikarisif_favavuk.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/fosawef/tikebenamuxazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29720463-2767-4226-8059-bbe92e80bf88/45565537977.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/acute_urinary_retention.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/31176555939.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/81897550711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc9607a2-e005-4086-aa91-46ff0d612610/rijizupuwevumutemitagap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e89faeb-8250-4b35-bf54-b8f2d8f54d9e/nuxetes.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/types_of_natural_selection_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdabeea7-d959-4b52-a8b1-d3b406dd3998/sims_4_glass_roof_room.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3fdcb8c-ceab-41d4-887d-432533d05373/dobepab.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a887.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA887 21416 bytes
SHA-256: 1805447baecdfe73bfe06cecdd6b9ace157d0ddb010971f6ed1d3994c7efed17
font_00_sfnt_off0000710b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 5012 bytes
SHA-256: d324a556bc5b209b6aaa07b97d75e1894ef1cf4a3d37f25ded5a4164491057d1
font_01_sfnt_off00008214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8214 11472 bytes
SHA-256: 724ec55e632a096d2afcb4f6f8cfe8788b65f2fbffe5c773840582f092d4737d

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