Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab5f3a7ad691403…

MALICIOUS

PDF

43.1 KB Created: 2020-08-22 16:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be1c71b4af89311425ff8eca75b14b0f SHA-1: 2e1a2c8356dae8ebc3175ca2f640e6506368c74d SHA-256: 9ab5f3a7ad691403f02b89541e2c12a7ef538decb09de224d41614e68e2069a4
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL, https://ttraff.ru/pify?keyword=serious+mass+informacion+nutricional+en+espa%25C3%25B1ol, is the primary indicator of malicious intent, likely serving as a lure for further malicious activity. No scripts were extracted, but the PDF structure and the malicious URL strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 2

  • 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.
  • 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.ru/pify?keyword=serious+mass+informacion+nutricional+en+espa%25C3%25B1ol
    • http://files.bakingwithella.com/uploads/1/3/1/8/131871852/temudutedegalivejoza.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/calendrier_2020_avec_les_jours_fris.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/37668189630.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/82537921223.pdf
    • https://cdn.shopify.com/s/files/1/0430/9535/9641/files/76922784217.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/oxford_phonics_world_1_teacher_s_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1773/2249/files/boeing_787_cockpit_layout.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6822/files/chemistry_notes_class_10_download.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d61.bin
d66501e14ecdffa010aaccd07275550442c702800cdaaa1ef3293738960e15e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D61 5476 bytes
font_01_sfnt_off00006fa1.bin
6351a54f1a0eac4d0a4a7fff7f8a2b8df8ba3cca1a673545e4d7800f7c685c6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA1 14844 bytes

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