Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3fbcf0a8a919a4…

MALICIOUS

PDF

43.8 KB Created: 2020-08-05 04:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42a8db40fc3087a05d605f0e6f11d96c SHA-1: e887680c27cf6c1ef1bedcc466abd8c52cc36f1a SHA-256: ce3fbcf0a8a919a45548134c21f954efd4500e20ac5d07c3b78763967c3b7beb
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=maladie+d+alzheimer+traitement+pdf`. The document body, though heavily obfuscated, contains this URL and a reference to 'Maladie d alzheimer traitement pdf', suggesting a lure to a malicious site disguised as a health document. The presence of a large number of links, many pointing to Shopify domains, indicates a link farm or SEO poisoning attempt to distribute the malicious redirector.

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.ru/pify?keyword=maladie+d+alzheimer+traitement+pdf
    • http://wunido.wrightwayretrievers.com/uploads/1/3/1/6/131606490/8667233.pdf
    • http://files.samhoustonbap.org/uploads/1/3/0/7/130739016/jebiza.pdf
    • http://files.mrsboyds.com/uploads/1/3/0/9/130969525/52c2fee43451.pdf
    • https://cdn.shopify.com/s/files/1/0431/7691/9194/files/kogefidifabesadimiru.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/bilopegukufaru.pdf
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/45676433044.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdf
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/autocad_file_to_converter_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9990/5429/files/90691737733.pdf
    • https://cdn.shopify.com/s/files/1/0429/1310/4035/files/fagafasapig.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jufozigazagapuji.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/22263920566.pdf
    • https://cdn.shopify.com/s/files/1/0433/6841/5400/files/tutorial_arduino_uno_bahasa_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0430/6544/2455/files/madoluxapebozujodibelebon.pdf
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/10640158758.pdf
    • https://cdn.shopify.com/s/files/1/0434/0164/2135/files/resume_for_business_owner.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_off00006a13.bin
981072f0d490441274e6cc2c3fb7a90bc6eee3af779adb8c03eab0784c30b564
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A13 5156 bytes
font_01_sfnt_off00007b81.bin
1b10305c22d033ff21421bf01aa4cba2cb63a3701146da56a34806221ecbb602
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B81 11724 bytes