Malicious PDF — malware analysis report

Static analysis result for SHA-256 08bb780a5d2fde0a…

MALICIOUS

PDF

38.8 KB Created: 2020-08-02 18:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7943347692124c62a6a570aa72a60d30 SHA-1: 107a3fcbe5b22e7b99bb056b5f3b24c13275f650 SHA-256: 08bb780a5d2fde0a0b31943bec5efd45a579e0715c31310a3661f7187596e198
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, https://ttraff.cc/pify?keyword=vicon+disc+mower, is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to direct users to malicious or deceptive content, likely for phishing or malware distribution.

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.cc/pify?keyword=vicon+disc+mower
    • http://files.rebeccagoldberg.net/uploads/1/3/0/8/130874598/5e86891d2f.pdf
    • http://files.ice-fyre.ca/uploads/1/3/0/8/130874143/vafukemi.pdf
    • http://files.jcjnutrition.com/uploads/1/3/1/8/131857024/jiberagusagupetup.pdf
    • http://files.athleticsnorth.net/uploads/1/3/0/9/130969545/sojipe-rotizavolagebof-zegur-gadalinepema.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/8303/7860/files/tuzenasemosipujola.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9349/files/gopogibugegexogowikaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/tadodumusepelu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1872/2216/files/nodatil.pdf
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/47785997121.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/1651103171.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9561/files/you_covered_me_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/rizopaxatigijisufezab.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/zozonog.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/53975791009.pdf
    • https://cdn.shopify.com/s/files/1/0431/2200/0029/files/43614390477.pdf
    • https://cdn.shopify.com/s/files/1/0440/5306/9974/files/mario_party_7_iso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/5931080466.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bd3.bin
20620a4648006e09f568577e96c7ddc489f2ebadbbfaba0142e7085826be6d53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD3 4900 bytes
font_01_sfnt_off00006c7e.bin
e5e0e5d632f2f1f7c001663c6684a086bc1d56de1206a25066e9736aa1588b89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7E 9920 bytes

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