Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7a64ba57930123…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 01:17:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7112ec85df95e18443703c57f33d1aae SHA-1: 7379728e5754bb53a29d891fb18bea8bc416b8fb SHA-256: aa7a64ba579301234b0df3869b48b988803627f0bbdce15da4dff9b6e6948328
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm designed to attract traffic. The embedded URL 'https://ttraff.cc/pify?keyword=categories+of+physical+disabilities+pdf' is the primary indicator of malicious intent, likely serving as a lure to a malicious site. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF links, reinforcing the link farm tactic.

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.cc/pify?keyword=categories+of+physical+disabilities+pdf
    • http://files.theelegantrider.com/uploads/1/3/1/3/131398010/75ce39312.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/badag.pdf
    • https://cdn.shopify.com/s/files/1/0432/2980/6759/files/20444979539.pdf
    • https://cdn.shopify.com/s/files/1/0431/7498/5885/files/akreditasi_rumah_sakit_pokja_ppi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/90692514931.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/19885102682.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2128194791.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/10973263314.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/57095299257.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/xitedabugijapipimenogavaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/77096067369.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/76633918380.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/fanod.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0118/files/fidis.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4153/files/maths_functions_formulas.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_off00006095.bin
af231c9ad682f63b226cddc81f7eadcc3dcebef1f58573784ed628bc99ffbb93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6095 5564 bytes
font_01_sfnt_off0000737d.bin
57c142d956089a37c45b75812efa58363c2f4a0a3d2ced943b996d381dc1c73e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737D 10160 bytes

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