Malicious PDF — malware analysis report

Static analysis result for SHA-256 91a234c1a9922a94…

MALICIOUS

PDF

42.5 KB Created: 2020-08-24 05:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 688fdc96ee71bd2ffdd46d880dadb5b9 SHA-1: 1deca69ecabfba6f55fe76342e009af6e53a0fcc SHA-256: 91a234c1a9922a940d72038ca50777056a7fc6cfcced922f941c1f5a2c00c6b2
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at `https://ttraff.com/pify?keyword=rajarhat+gopalpur+municipality+mutation+form`. This redirector likely serves to obscure the final destination, which is probably a phishing page or a malware download site. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=rajarhat+gopalpur+municipality+mutation+form
    • http://files.visualtommy.com/uploads/1/3/1/0/131070529/rativ-vurotiso-xorag-jakabagov.pdf
    • http://files.brockcallen.com/uploads/1/3/0/7/130775719/6945781.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/41951490779.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5271/files/fisumepuda.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/34850838338.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/capricho_arabe_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/aprendiz_de_brujo_2.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4056/files/33794503608.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/44314859298.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/gapelumasalegopokolimoki.pdf
    • https://cdn.shopify.com/s/files/1/0440/5172/6501/files/botum.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/dajimagun.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_off00005aee.bin
3c3bbdd6d7404a5bc0f55765733fcbc635f2795c44c4d6516fdf37ec9e627b55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEE 5436 bytes
font_01_sfnt_off00006d5f.bin
86ff3c657915e5a0a57aba4240a13878f030a76aac37b355eabaabf8a0520876		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5F 14840 bytes

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