Malicious PDF — malware analysis report

Static analysis result for SHA-256 890c9a6cfdc4544c…

MALICIOUS

PDF

49.3 KB Created: 2020-08-24 21:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e75e30228a32a91327382084e0883cb SHA-1: 9f735cc186fe1a7c7cea8fecc64a301bce44b771 SHA-256: 890c9a6cfdc4544cbf8947c45d42784f9ca09e156b90b7522c42199af709ba4b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF file contains a large number of embedded links, many pointing to PDF documents hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=cetane+number+improver+report, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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.
  • 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.
  • 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/pify?keyword=cetane+number+improver+report
    • http://gikizi.devinjamesbaldwin.com/uploads/1/3/0/8/130813592/lipenagezidi_nasigusi_filinarurej.pdf
    • http://gudog.casadedios.us/uploads/1/3/1/4/131437850/xonovajogubukarasujo.pdf
    • http://files.alexandrudina.com/uploads/1/3/0/7/130740124/donirugor-zukosilenav.pdf
    • http://dekudofuv.novembercustoms.com/uploads/1/3/1/6/131636725/a97a2ab1c930a.pdf
    • https://cdn.shopify.com/s/files/1/0435/2062/2756/files/livro_apicultura_manejo_e_produtos.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/lipujo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4629/6982/files/firawepafujefewo.pdf
    • https://cdn.shopify.com/s/files/1/0454/2994/8572/files/excel_dart_cricket_score_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/9096/7714/files/lodajuzezegetamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/86012586869.pdf
    • https://cdn.shopify.com/s/files/1/0435/2383/4024/files/frost_and_sullivan_telematics_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/1970/6273/files/vixazut.pdf
    • https://cdn.shopify.com/s/files/1/0441/3816/8472/files/korasudukurosi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/73252899978.pdf
    • https://cdn.shopify.com/s/files/1/0431/8845/3533/files/68081153629.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_off000081eb.bin
69d26367231256d15a222c086c9a7969ab8a60887302623bf4101205ed388b6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81EB 4860 bytes
font_01_sfnt_off00009258.bin
6c254dcbf651d854d64c7bc77f658a8e320515ecb246805b1b639fdfd2e18c0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9258 11128 bytes

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