Malicious PDF — malware analysis report

Static analysis result for SHA-256 96da504cff44f34e…

MALICIOUS

PDF

37.2 KB Created: 2020-08-05 15:36:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8f384eb7fe54021a19ca5456579dc3e SHA-1: 296d7c0068b8538c8a56ccba5aca076fb36ac186 SHA-256: 96da504cff44f34e3fea939da6f65d3d14d4da12c4b580bc8dfaed0b43197d95
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One of the primary links redirects to a known malicious domain, ttraff.ru, which is likely used to host further malicious content or phishing pages. The document body, though partially corrupted, contains text related to PDF manipulation tools, suggesting a lure to entice users to click the malicious link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=split+and+merge+pdf+files+free+online
    • http://files.alextissiere.com/uploads/1/3/1/4/131406226/bf4727a0010abff.pdf
    • http://files.goldbergiryami-taxcert.com/uploads/1/3/0/7/130775277/2874932.pdf
    • http://files.nevrapoint.com/uploads/1/3/2/7/132710717/7833480.pdf
    • http://lisuwezep.bwm.life/uploads/1/3/2/6/132681556/nidim-jiwes.pdf
    • http://files.kingsporthorses.com/uploads/1/3/1/3/131383553/1742861.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0810/files/kiwedexo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5121/2200/files/99867674198.pdf
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/porigibupijatuvasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/43864890420.pdf
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/75361606055.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/carestart_malaria.pdf
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/kilefik.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/69532404893.pdf
    • https://cdn.shopify.com/s/files/1/0428/9003/5366/files/67684067885.pdf
    • https://cdn.shopify.com/s/files/1/0433/6327/0815/files/gogeriseseriwiwejagaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/1668/1629/files/python_coding_utf_8.pdf
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/45234346757.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_off00004f73.bin
ed15cb1a41112587be91adb34e6bbca8aee6a0840536707548724d062d93446a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F73 5464 bytes
font_01_sfnt_off000061f3.bin
526fbf4cca13dbd6f508e3b9c64043b1d4303a4cc551797c988c33dccea8d468
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F3 12324 bytes