Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb81e102b720366…

MALICIOUS

PDF

36.5 KB Created: 2020-08-15 23:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54b310cd0021823b8870c5618ae0a36e SHA-1: 80fa9da1c2ed4dc75920f63c3fd3253708612cad SHA-256: beb81e102b72036698d324c9d2301e7d9700b18f20159c3ac067ba89f0bb6ee8
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious redirector URL and a benign-looking PDF title, suggesting a lure. The presence of a download button heuristic further supports the social engineering aspect of this attack. No scripts were extracted, limiting the analysis of further payload execution.

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.com/wb?keyword=heal%20your%20life%20louise%20hay%20pdf%20download
    • http://jezad.riveroaksservices.com/uploads/1/3/2/6/132695663/264638d2f194.pdf
    • http://files.maryellenallison.com/uploads/1/3/0/8/130815303/99551f590bcd43.pdf
    • http://files.ukuleleforteachers.com/uploads/1/3/0/9/130969080/sarotu-jopivizuz-wizasufofudo-ridimimir.pdf
    • https://cdn.shopify.com/s/files/1/0431/4310/2613/files/15030829266.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1687/files/xiwuwomeverow.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/98037596349.pdf
    • https://cdn.shopify.com/s/files/1/0431/2888/1313/files/tugebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/33523626891.pdf
    • https://cdn.shopify.com/s/files/1/0431/5991/2610/files/pojeniruxumob.pdf
    • https://cdn.shopify.com/s/files/1/0431/1583/9645/files/que_es_el_anabolismo_y_catabolismo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/27602591733.pdf
    • https://cdn.shopify.com/s/files/1/0428/5772/6118/files/suriwafada.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/flow_cytometry_review.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_off0000505a.bin
e15edee3edbd5ee5ea84c49855a69ffbe2ae8cfe8e907c2e27057b134f54c54f
pdf-font-stream PDF embedded font (sfnt) at offset 0x505A 5284 bytes
font_01_sfnt_off00006261.bin
038a47825abce15944fae6e98d44ef921b1dd739b9c113709594a4244b8860a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6261 10216 bytes