Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda88eb9c8ecf65b…

MALICIOUS

PDF

39.2 KB Created: 2020-08-26 02:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7105468a05de2f7a31a7c5c8e46ed53d SHA-1: df1943e64dafceee71967d2f78c1a0f0e5e55d63 SHA-256: cda88eb9c8ecf65b064c322dfa898f47abbf2e323a1c7813e6272e96c00c29d1
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the ultimate destination. The document body, though heavily obfuscated, contains the same lure text and URLs, reinforcing the malicious intent to redirect users to potentially harmful content.

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=lost+mines+of+phandelver+battle+maps
    • http://files.margitbantowsky.com/uploads/1/3/0/7/130776509/rudamesu.pdf
    • http://files.fbnv.org/uploads/1/3/1/3/131398108/1143477.pdf
    • http://files.oceanateachbz.com/uploads/1/3/1/4/131407737/5363498.pdf
    • http://pikuzas.authorajbell.com/uploads/1/3/0/7/130738799/rowetag_vamazajum_miruwezaji_nenap.pdf
    • https://cdn.shopify.com/s/files/1/0437/7319/8497/files/nibovubonoduwigopis.pdf
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/puwifezonuso.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojijemorewowasimagaxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7630/5564/files/66337359705.pdf
    • https://cdn.shopify.com/s/files/1/0433/3918/6344/files/catering_management_mohini_sethi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2738/9851/files/92587729699.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/xegipetaxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68769425665.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0589/files/jujunobuvaxaze.pdf
    • https://cdn.shopify.com/s/files/1/0433/8660/1635/files/turkish_airlines_logo.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_off00005a70.bin
3650ad16af7be5e71a44ca626d1d3ad286825cd22af41a0cdaad3c9e179b805f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A70 5420 bytes
font_01_sfnt_off00006cb3.bin
b16c382cc36b063b3307e42811d6bbe668d2e0bf52a03ce7fa0782764f0c57d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB3 10292 bytes

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