Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5063a085d147e04…

MALICIOUS

PDF

48.7 KB Created: 2020-08-22 06:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5063f17d3754feac7533ade90c4da86 SHA-1: 3222ce7e1011c29d83ded7e57f8e09c6d9554eb4 SHA-256: a5063a085d147e04dc4c3f7458138e9d7c9f50175accdc5b9e19261b613f5a68
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=bigg+boss+audio+naa+songs'. Additionally, it exhibits characteristics of a link farm, with numerous external PDF links, one of which is 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/laxigitifudavizemitipa.pdf'. The document also employs a social engineering lure, instructing the user to install a browser extension or update to view content, which is a common tactic for credential theft or malware installation.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=bigg+boss+audio+naa+songs
    • http://files.recipes4raisingkids.com/uploads/1/3/1/4/131454116/xikawuleposapepis.pdf
    • http://files.fernandoandradeart.com/uploads/1/3/2/7/132740821/2864001.pdf
    • http://files.glsgroupllc.com/uploads/1/3/0/7/130776327/xupixovosebetek-lowakax-kejuwexuzi-navetube.pdf
    • http://vigusik.dgdesignsjewelryandsupply.com/uploads/1/3/1/3/131383664/4310653.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/laxigitifudavizemitipa.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/owners_manual_1998_mercedes_c280.pdf
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/87851015200.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/dizexabuxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niriliruvurufuwupaku.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/battlestar_galactica_order_to_watch.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/vosevunubebelimowofone.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0532/files/functions_in_ms_excel.pdf
    • https://cdn.shopify.com/s/files/1/0428/5598/9404/files/wakaxivejiwepo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/12135689211.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_off0000750f.bin
37425f9e310ed6a31300a8b1b12affd4406b17b5ff5d93099679b00a20f71239
pdf-font-stream PDF embedded font (sfnt) at offset 0x750F 5052 bytes
font_01_sfnt_off00008647.bin
13d965d69963810be46dbe9097d2fe05f72aae3685756cf23fd73e71d10006c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8647 14848 bytes