Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bda73d9e64ef25d…

MALICIOUS

PDF

42.8 KB Created: 2020-07-17 14:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 803a9ae87a08b38de5ae691614d29873 SHA-1: c6d7124bcf9154d2887b40627e799e8e7c0008a5 SHA-256: 1bda73d9e64ef25d2362836d9695b664aa428c55e05b812e0a1654d4f91bd27d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. It also contains a PDF link farm heuristic, indicating a large number of external links, many of which are benign WordPress PDFs. The primary malicious URL is used in a lure related to downloading a dictionary PDF. No scripts were extracted from this sample.

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/wb?keyword=the%20new%20oxford%20picture%20dictionary%20monolingual%20english%20edition%20download%20pdf
    • http://files.gardennannie.com/uploads/1/3/2/8/132816202/wosapalawe.pdf
    • http://files.jasheridan.com/uploads/1/3/1/4/131438211/8f3d8b379e.pdf
    • http://files.jeelsphoto.com/uploads/1/3/0/8/130813881/7e1cf9fa5f6.pdf
    • http://files.jasheridan.com/
    • https://wijojuwatip.files.wordpress.com/2020/07/31031428856.pdf
    • https://gejovofusasa.files.wordpress.com/2020/07/90373669920.pdf
    • https://kobumep.files.wordpress.com/2020/06/zebip.pdf
    • https://bozuxunod.files.wordpress.com/2020/07/lufegaxepanoda.pdf
    • https://kuzulod.files.wordpress.com/2020/06/nesoluvabowawexa.pdf
    • https://domunilide.files.wordpress.com/2020/06/2161443683.pdf
    • https://widojudi.files.wordpress.com/2020/07/34364440318.pdf
    • https://zomifedig.files.wordpress.com/2020/07/navagojopaxigilisufuvim.pdf
    • https://didawoza834803593.files.wordpress.com/2020/06/jikabolisamipoleg.pdf
    • https://lolakovaxeg.files.wordpress.com/2020/06/47503412013.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lubogalevomiwubojaxijafax.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/68779635820.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/rugasilagaxegozox.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/24743925601.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/manewazidiwumoki.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/faromomososeluxazuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/16801498813.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/sesebixatoju.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_off000063bc.bin
62044e035bbf7e04cd3d47cce52f53e5c9b309daae6e328057f0a4869f9743a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x63BC 5660 bytes
font_01_sfnt_off000076f0.bin
93112880aca89ec6d938f907cc54caa9b9cb0f2996959eb924dc31a08003fe9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x76F0 13112 bytes