Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab29b178b49fdbf…

MALICIOUS

PDF

37.5 KB Created: 2020-08-12 13:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9a2d2498196c56e7f199b11d97a043c SHA-1: 68e85f52abae8ae19c9c900ff8ae296a56a3d093 SHA-256: aab29b178b49fdbf31c799805b3285c251f468b2b3eed7e35f3b5be853385f81
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a lure to download content, directing users to click a link. This link, 'https://ttraff.cc/pify?keyword=baba+yetu+pdf+download', leads to a redirector associated with malicious activity. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify, likely for SEO manipulation to increase visibility for malicious content. The presence of multiple embedded URLs and the redirection heuristic strongly indicate a social engineering attack aimed at driving traffic to malicious sites.

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.cc/pify?keyword=baba+yetu+pdf+download
    • http://pimibi.covert-pi.com/uploads/1/3/1/4/131453870/d4305f5f.pdf
    • http://files.savorlifenutrition.com/uploads/1/3/0/7/130775402/muruzavekelewe.pdf
    • http://files.theoriongrouppodcast.com/uploads/1/3/1/6/131606491/zerovuravowov_gososuxenuvimi_nafewulin.pdf
    • http://libuzo.paintthetv.com/uploads/1/3/1/8/131857152/7a20e.pdf
    • https://cdn.shopify.com/s/files/1/0429/2693/2124/files/94387180359.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/pejovedowedebelaluj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/2952440102.pdf
    • https://cdn.shopify.com/s/files/1/0433/8325/9285/files/rozasuroloditovowewag.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/88124816815.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0167/files/android_onenote_import.pdf
    • https://cdn.shopify.com/s/files/1/0429/3427/2159/files/joxamadinosaru.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/81037647556.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/vufuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/89665223948.pdf
    • https://cdn.shopify.com/s/files/1/0435/3536/8346/files/4445958189.pdf
    • https://cdn.shopify.com/s/files/1/0436/4953/2069/files/10868230894.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_off00004ab8.bin
0b3556fbb89040c63fe2ebe11cd9cc41cafa2025613d9f5fd1e4575fc7ba33be
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB8 5144 bytes
font_01_sfnt_off00005c5f.bin
e4499c67746695e921c7d6f26dc92f6f7fdab3290e49a0f31462b1eecd628856
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5F 13704 bytes