Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ac6e02c8b91a3e…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 18:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45e2de92d13516a8eefd1e3ebaed1e33 SHA-1: 0a4c675d791d954ebaf4b19e8fa90da74666e916 SHA-256: 80ac6e02c8b91a3e767e46db1d1d6999ad093c8173664313ce78397f4e2a39f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains a lure suggesting an 'Android studio update app version' to trick users into clicking malicious links. The primary malicious link, 'https://ttraff.com/pify?keyword=android+studio+update+app+version', is identified as a redirector to potentially harmful infrastructure. The document also hosts a large number of external PDF links, many of which are hosted on Shopify, suggesting a link farm for SEO manipulation or to distribute further payloads. No scripts were extracted from this sample, but the social engineering and redirection tactics are clear indicators of a phishing or malware delivery attempt.

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=android+studio+update+app+version
    • http://files.fancydollfacepersians.com/uploads/1/3/1/6/131606133/8088000.pdf
    • http://files.petersparents.com/uploads/1/3/1/8/131856331/9983982.pdf
    • http://nifin.discovernectar.com/uploads/1/3/1/4/131437454/5e30c0282.pdf
    • http://files.lilybellekeepsakes.com/uploads/1/3/1/4/131409794/cda01efde39e3a.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/harmy_s_despecialized_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/afro_american_fragment.pdf
    • https://cdn.shopify.com/s/files/1/0434/4915/5740/files/types_of_multilingualism.pdf
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/lewefavopapapawej.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/zizowugebuwakiporu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/13896064764.pdf
    • https://cdn.shopify.com/s/files/1/0434/3978/4103/files/22387120537.pdf
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/84520899221.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buxigol.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_off00006251.bin
3d2f73e2a95d19897f627e7118037bd59cbf2fc2b8a1a8342366318c33b4e6cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6251 4972 bytes
font_01_sfnt_off00007343.bin
0971cdfb5a96d10b867b2eb7bbecd52a25a43db9791ae3bf08b665d7f512b8b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7343 11844 bytes