Malicious PDF — malware analysis report

Static analysis result for SHA-256 adb6acc911a73dec…

MALICIOUS

PDF

34.8 KB Created: 2020-08-08 14:50:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b9660d06e3c255eafc761207c248f22 SHA-1: ff17eeea7be40b534d8b97d7eb0bf5b613829ddd SHA-256: adb6acc911a73dec5460e536e9dc911e9fb5fa2b90290c4547686782f0d54c70
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to PDF files hosted on various domains, including Shopify. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which likely serves as an initial lure or distribution point. The presence of a link farm suggests an attempt to manipulate search engine results or distribute further malicious content, aligning with a phishing or SEO manipulation attack pattern.

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=cuaderno+calitecno+pdf
    • http://files.mobilityfamily.com/uploads/1/3/0/7/130738621/gixosowazodetis-wutusevinagi-lisexig-gexowinopudadu.pdf
    • http://files.communityplanningishere.org/uploads/1/3/1/4/131437889/dajimirumedis-xitukep-xeluzuz-gopafimeno.pdf
    • http://files.nc3wilkesboro.com/uploads/1/3/1/4/131407406/jujuramidejakot-xinibubabikonex-lesob.pdf
    • http://files.emeliejanssonfoto.com/uploads/1/3/0/9/130968984/jemofetum.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/xolagerebanutopawiso.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1453/files/encyclopedia_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/aieee_2020_question_paper_with_solutions_pdf_allen.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/xomabaxaka.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7668/files/52457720854.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/95332329052.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/jajepirufawaxugopilitize.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/fosikipas.pdf
    • https://cdn.shopify.com/s/files/1/0432/8688/8601/files/98174120472.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jufozigazagapuji.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_off00004a37.bin
ac37259c65bb7a991389beb1338b3bfcd8302ae05de08daec36e9df285365619		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A37 4876 bytes
font_01_sfnt_off00005adb.bin
041d8f39697eb91c8ee4844a45284032a26d3ceb668ebf4c69f6663733b304a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADB 10872 bytes

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