Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9016cb0c504ecee…

MALICIOUS

PDF

32.0 KB Created: 2020-08-21 03:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87b524829b6b642804a2a9e449ce5d76 SHA-1: 00a1068fa26d78614b1970523db27bc5e18016c2 SHA-256: a9016cb0c504ecee892abb4285fdc93fd76a18e686634e009bf5fc7570a7e5ff
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing a movie title and a URL that appears to be a lure. The primary malicious URL is https://ttraff.cc/pify?keyword=bichagadu+telugu+movie+hd+video, which is likely used to redirect users to a malicious site.

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=bichagadu+telugu+movie+hd+video
    • http://pumebowi.nwaopenspace.com/uploads/1/3/1/3/131383482/dc0c467.pdf
    • http://zupugo.ssvtac.com/uploads/1/3/0/9/130969060/telavumowokivovotov.pdf
    • https://cdn.shopify.com/s/files/1/0434/7009/4501/files/request_letter_for_approval_of_proposal.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/lifodoxif.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/9150137844.pdf
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/napunutikodurimok.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/zosebaronalivopijajizit.pdf
    • https://cdn.shopify.com/s/files/1/0457/0808/3356/files/81226431049.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/zutaku.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_off000040c9.bin
4b06bf7b649c4e257d3ac5ff018e9c0d8d9ade9438f8b2f06512e26c24f1b3c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40C9 5188 bytes
font_01_sfnt_off0000524f.bin
65abf37d7fded6d8dd120e2ec324a128ec7315ab69b727b8b23739086d57e877		 pdf-font-stream PDF embedded font (sfnt) at offset 0x524F 9816 bytes

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