Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd607d5f3bd584e…

MALICIOUS

PDF

39.2 KB Created: 2020-08-21 20:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a4ecb9bbade6132a39b2cb41df7d73a SHA-1: 58d0727d079a3a25e0ffc1ca57afec6a5afb4d85 SHA-256: dbd607d5f3bd584e9c5cd0c5c77621c9c613a0d5f262597f4b42366e54da3ca8
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=icaap+report+santander', points to known malicious redirector infrastructure. The presence of a link farm suggests an attempt to obscure the final destination or to distribute traffic across multiple potentially malicious sites. No scripts were extracted, and the document body was unreadable, but the heuristic firings strongly indicate a malicious redirection attempt.

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=icaap+report+santander
    • http://guwufuv.carnegiereiki.com/uploads/1/3/0/8/130814017/e6f71f.pdf
    • http://files.boxmouthdesigns.com/uploads/1/3/0/7/130775867/kuwurakogijakiramo.pdf
    • http://bosula.yaelazoulay.com/uploads/1/3/1/0/131070109/zuvukabefejudopog.pdf
    • http://files.dsilvadesigns.com/uploads/1/3/1/0/131070313/limota_lutevojes_sewutixe_fenik.pdf
    • http://wagidop.zls-linc.org/uploads/1/3/2/8/132814930/kokezob-pirujel.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/pokemon_yellow_cheats_rare_candy.pdf
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/bopawawiveloz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/vokadiwakitugopum.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/897830086.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/utd_psychology_degree_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/0172/4577/files/volepijipetimoxurabopalu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1320/files/tamifadepofamusa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7690/2309/files/tigeterab.pdf
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/bimus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051a0.bin
a2b15b8f29fbd4b50f0b2984f5869acd56531c1f2c0e51c5b8dc59e7aa19683b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51A0 4712 bytes
font_01_sfnt_off00006195.bin
625da850d58ba031082b4792d9415f57d5533d7517fe3c3dccaf59577d38ab91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6195 9416 bytes
font_02_sfnt_off000081c0.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81C0 4324 bytes

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