Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7003058736f20bf…

MALICIOUS

PDF

33.3 KB Created: 2020-08-15 12:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d60cc9d9492314e9ab92d33c2a82709 SHA-1: 141b24c0b3ebb87f8cf07a8bd0ef177245259104 SHA-256: a7003058736f20bf01e46c777df183dc8ac747eb37e268e50b37b57c100684da
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external links, indicating a link farm. The primary malicious URL identified is https://ttraff.cc/wb?keyword=moedor%20de%20pimenta%20manual%20antigo. The document body contains garbled text and the embedded URL, suggesting it is not intended for legitimate user interaction but rather as a vehicle for link distribution.

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/wb?keyword=moedor%20de%20pimenta%20manual%20antigo
    • http://zawatap.vinitaparambi.com/uploads/1/3/1/4/131452954/142b469.pdf
    • http://perogodit.stephenwitkin.com/uploads/1/3/0/9/130969596/3176082.pdf
    • http://tukonokiw.villagesbmwzclub.com/uploads/1/3/0/9/130969723/bigisilumivopobo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/bamigowasozakor.pdf
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/bytearrayinputstream_to_file_java.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/organelos_celulares_libro.pdf
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/xokolazatewugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sividejujim.pdf
    • https://cdn.shopify.com/s/files/1/0429/6808/8742/files/crits_apocryphes_chrtiens.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/toxamajafuwidawim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdf
    • https://cdn.shopify.com/s/files/1/0432/4491/2802/files/kenotadi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/pofanuxitaxod.pdf
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/fegitasa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/25999840296.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80804151078.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_off00004341.bin
20f859b5fa1e3f2accfc43869777a9eb4b1dc7039e29fc878fd6cf6416564019		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4341 5104 bytes
font_01_sfnt_off00005482.bin
8a6940f6ee5a11bed0b91acc5e097664c3783b55df75c1d5ea14a4ec5824c96a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5482 11112 bytes

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