Malicious PDF — malware analysis report

Static analysis result for SHA-256 397670cc50daa73a…

MALICIOUS

PDF

47.4 KB Created: 2020-11-05 07:50:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 098c11a1346769cc3ade543042e249a2 SHA-1: 98fcca5b6ac44b15007a513c045733661b5dc36c SHA-256: 397670cc50daa73a973e819fcb67befe41e3ba46360f04e8166bafc546e703a4
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://ttraff.link/123?keyword=sense+of+motion+footwear, is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious link strongly suggest a phishing or redirection attempt, likely delivered as a spearphishing attachment.

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://ttraff.link/123?keyword=sense+of+motion+footwear
    • https://cdn-cms.f-static.net/uploads/4426423/normal_5f9ed3ce71693.pdf
    • https://cdn-cms.f-static.net/uploads/4369161/normal_5f94d05416fbc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/memul/alankar_in_hindi_class_9.pdf
    • https://s3.amazonaws.com/mefadedosuw/fumipekimotigodigo.pdf
    • https://s3.amazonaws.com/wilugugo/75239245916.pdf
    • https://s3.amazonaws.com/padadutiseni/31886297583.pdf
    • https://uploads.strikinglycdn.com/files/326c5617-af13-499c-9227-8a15dcf6f5db/50003198259.pdf
    • https://s3.amazonaws.com/sazixipame/genomujugufapob.pdf
    • https://s3.amazonaws.com/naramuro/head_start_logo.pdf
    • https://s3.amazonaws.com/wonoti/bible_quiz_on_the_book_of_genesis.pdf
    • https://uploads.strikinglycdn.com/files/d93c131d-c59a-4a3b-ba52-74c4416ac32d/bolurilegok.pdf
    • https://s3.amazonaws.com/felijaziremole/10413042087.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070aa.bin
5cd93d6b3714107bb9964a0532840c2b523be6c91cb9f151fe69a56f959e0aec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70AA 5076 bytes
font_01_sfnt_off000081dd.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81DD 1800 bytes
font_02_sfnt_off00008a6a.bin
f09343eb2233301b5fca7e5e39f5d9566de0ff960c6d4788fbc31045fc5c91f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6A 10880 bytes

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