Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba32d25c0d38486…

MALICIOUS

PDF

48.5 KB Created: 2020-08-31 03:12:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0917779324948474b780e60407d36b7a SHA-1: c0f5f705c52fed898492eaf4d1bf9c8d1000be90 SHA-256: bba32d25c0d38486f48b2a47364c4b41666ca83615421e5605b0023dc8bf54cf
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.com/wix?keyword=planche+de+radiesth%25C3%25A9sie+%25C3%25A0+imprimer'. Additionally, a large number of links point to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute the malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.com/wix?keyword=planche+de+radiesth%25C3%25A9sie+%25C3%25A0+imprimer
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/66487815144.pdf
    • https://cdn.shopify.com/s/files/1/0430/3978/5111/files/vowiroxokewe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/naguto.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/84110579515.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8659/files/small_software_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/vamukavif.pdf
    • https://cdn.shopify.com/s/files/1/0430/7333/9559/files/php_form_if_submit_button.pdf
    • https://cdn.shopify.com/s/files/1/0432/7555/0873/files/90841144046.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/55593106768.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/a_b_c_chart.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/bir_cash_disbursement_book_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/wirul.pdf
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/46853287138.pdf
    • https://cdn.shopify.com/s/files/1/0435/7708/2017/files/the_answer_my_friend_traduo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8230/7989/files/arduino_leonardo_schematic.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/81961555897.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071ea.bin
fd7d1ee50e52ef2f75ed9d5d0121a87d924f7e994319ae8edfd95b2c785d84dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EA 5688 bytes
font_01_sfnt_off0000842e.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842E 1800 bytes
font_02_sfnt_off00008cbc.bin
1eb57be9c4aa886d5ceaf9c5f54eb0b404a451cc8084f2ed913aaf71a4aa75a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBC 11716 bytes

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