Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb1a8c3689f547e…

MALICIOUS

PDF

48.7 KB Created: 2020-08-05 05:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67f6a49b484ad0de963f2fe74ffddf2e SHA-1: 3df555ec3651be61d3750d57046eac57f208f089 SHA-256: 3cb1a8c3689f547e6feef1e70781bb2dbdaa2f59129f37fe6e5724a6778663cd
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body text. This link leads to a page that likely attempts to trick the user into downloading a malicious file, masquerading as a criminal record certificate. The PDF also contains a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or to host malicious 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.ru/pify?keyword=descargar+certificado+de+antecedentes+judiciales+en+pdf
    • http://files.craftpixie.co.uk/uploads/1/3/0/7/130740412/pawogolitibafi.pdf
    • http://files.jillcranwellwarner.com/uploads/1/3/1/3/131398125/libir-fuxixipajujazu.pdf
    • http://files.dentacarekenosha.org/uploads/1/3/0/7/130776272/2491248d8e397.pdf
    • http://files.smithbrosplay.org/uploads/1/3/0/7/130739570/kujusuparejip-zovivumije.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/66808950814.pdf
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/73756880874.pdf
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/52349939175.pdf
    • https://cdn.shopify.com/s/files/1/0437/7791/7085/files/adam_smith_absolute_advantage_theory.pdf
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/73423954224.pdf
    • https://cdn.shopify.com/s/files/1/0437/3273/0017/files/ge_hydrowave_washer_problems.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/damozoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8872/files/revolution_season_3.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/newisasiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0432/6984/9246/files/81055660300.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606f.bin
048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 6744 bytes
font_01_sfnt_off00007154.bin
1f740a24a0024e2f5611b1e0064f06cce8ba158d0730f77b0b0f8a89f4a39ee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7154 5280 bytes
font_02_sfnt_off00008359.bin
2d24b7cd406a5be4fa842852901498586af35b90f73f218185a36e1c08a5cb60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8359 10968 bytes
font_03_sfnt_off0000a6f0.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F0 4324 bytes

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