Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eecb992e1ef853f…

MALICIOUS

PDF

39.7 KB Created: 2020-08-21 14:07:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d91cb0d361ee9745becdd231f7b1af0c SHA-1: 7544f3201b91b6d4229c21b6fac80f6b210606dc SHA-256: 9eecb992e1ef853fe075b08824d7215303c5fb5c62f31106377dff8f6a0feea7
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure for statistical software, likely to download a secondary payload. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on shopify.com, which are likely part of a link farm to improve search engine ranking for malicious content.

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=jmp+statistical+software+free++mac
    • http://files.amandamarkle.com/uploads/1/3/2/6/132682585/c0a25ec6981.pdf
    • http://files.caked.love/uploads/1/3/1/4/131438843/8249474.pdf
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/23172180667.pdf
    • https://cdn.shopify.com/s/files/1/0431/5499/7402/files/63704561159.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/pitapozilimenuwivuwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5651/9576/files/keritosaxuma.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/diary_template_for_onenote.pdf
    • https://cdn.shopify.com/s/files/1/0431/3740/0999/files/jafitifaraxugapezetajaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vofelowuloluvazoriwonub.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/beautifulsoup_python_php.pdf
    • https://cdn.shopify.com/s/files/1/0451/6734/5818/files/bafaka.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/30114269038.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/fabled_forest_afk_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5614/4282/files/brunner_and_suddarth_s_textbook_of_medical_surgical_nursing_volume_2.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_off00005c35.bin
a18e7e6615354485a18f5552bfe1fff29591e80e97ee65907b6fec36539aae3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C35 5240 bytes
font_01_sfnt_off00006e03.bin
9f6994904a9bfe0c6f44b2d0693d836702a4f77c19724a4aea66ed299b8200d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E03 10612 bytes