Malicious PDF — malware analysis report

Static analysis result for SHA-256 09606d9c48274a2f…

MALICIOUS

PDF

46.7 KB Created: 2020-10-31 08:04:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 40c5baa9fe4d13d9411e7cf400bb5870 SHA-1: 9f358705693f6035685a6a494666f9e5a26897e6 SHA-256: 09606d9c48274a2f4e1111df328cc2de7465fd7688384c2ebfe527a3e7d29932
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://cctraff.ru/strik?keyword=haier+esa405r+5000+btu+room+air+conditioner+manual, is the primary indicator of malicious intent. This suggests the document is designed to lure users to a compromised site, likely for further exploitation or credential harvesting.

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://cctraff.ru/strik?keyword=haier+esa405r+5000+btu+room+air+conditioner+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426551/normal_5f9ad7ed4d326.pdfIn PDF document text
    • https://zuragani.weebly.com/uploads/1/3/1/4/131438510/1540784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387709/normal_5f8e55fab61b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lebaxa/ib_art_themes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4030/7882/files/a_quiet_place_watch_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2406/3392/files/penegubuxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9177/8454/files/scary_multiplayer_games_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9905/3988/files/kingroot_pro_mod_apk_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2702/6079/files/instagram_ios_apk_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8167/7000/files/key_word_transformation_exercises_cae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/6280/8742/files/kelageputulabenuduxeraj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B40 5424 bytes
SHA-256: 9b1b7b0aabd4ae1bff85f374b0af2153c1360f1f9b5c5f3743b156c8fe91ab3e
font_01_sfnt_off00007d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D90 10012 bytes
SHA-256: 92708959826c4aa20bf5fbdb802a60fd510ed4fccffa3dc918651f575af07cdf
font_02_sfnt_off00009fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2