Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa79c8ddfc36adfb…

MALICIOUS

PDF

39.9 KB Created: 2020-08-21 05:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69342884e17e922300695ff610f70b72 SHA-1: cdc05da2433ec8d1308b5eafe6c2265f78661d57 SHA-256: fa79c8ddfc36adfbe6b96cc11eba1ac7209701c35548b6d54414e9f7ddecba22
120 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, though heavily obfuscated, contains text related to a 'multidimensional poverty index report 2018' and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to benign Shopify URLs but one critical redirector. The primary intent appears to be directing the user to the malicious ttraff.com domain.

Heuristics 3

  • 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.
  • 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=multidimensional+poverty+index+report+2018
    • http://files.dasoa.org/uploads/1/3/1/6/131606211/1557c1.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/11719062166.pdf
    • https://cdn.shopify.com/s/files/1/0437/9069/6597/files/94214073197.pdf
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/89314881676.pdf
    • https://cdn.shopify.com/s/files/1/0434/6288/5541/files/adj_order_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/50492775212.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54344474436.pdf
    • https://cdn.shopify.com/s/files/1/0435/7393/6291/files/cctv_camera_dvr_installation.pdf
    • https://cdn.shopify.com/s/files/1/0432/5471/0427/files/likula.pdf
    • https://cdn.shopify.com/s/files/1/0432/7777/9100/files/dispositivos_de_almacenamiento_de_informacion_magneticos.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_off00005c1d.bin
fade6fab2bae7f23106619abd018909abb4d821756fa80d117ab0815339e2b47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1D 5860 bytes
font_01_sfnt_off00007008.bin
2c15fd97ed094ab37625daf1da3dfaf0adeb687a9c784765be588dd0a0ef7555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7008 10208 bytes

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