Malicious PDF — malware analysis report

Static analysis result for SHA-256 fccd6260a4ca1706…

MALICIOUS

PDF

44.9 KB Created: 2020-08-09 01:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5daff34c0c6b75172d64b48a336d5435 SHA-1: 81de8786cd4d2b0d59129997845858f4bfaf2758 SHA-256: fccd6260a4ca1706c64769a7de43a9d24fa248afe8df114d72a228e2931e629b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.cc/wb?keyword=brother%20printer%20only%20prints%20manual%20feed', is identified as a malicious redirector. The presence of a link farm and a malicious redirector suggests a social engineering attack aimed at directing users to potentially harmful content. 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.cc/wb?keyword=brother%20printer%20only%20prints%20manual%20feed
    • http://baruxidup.doeverythingwithgrace.com/uploads/1/3/0/9/130969352/dea2e4406fa40.pdf
    • http://files.tasmanianpioneers.com/uploads/1/3/1/4/131411596/a46df5.pdf
    • http://files.chefenrick.com/uploads/1/3/0/8/130814716/tisexabepirugazizami.pdf
    • http://files.thewholechildmatters.com/uploads/1/3/0/7/130775588/tejemirogeva.pdf
    • http://files.kingdomhandymangillette.com/uploads/1/3/1/4/131453124/cdaff080253f213.pdf
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/o_reilly_introduction_to_machine_learning_with_python.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/8659450999.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/pixotatoxofigibiripibi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2756/1634/files/cambridge_english_for_business.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/ipl_schedule_2018.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/52984108801.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3883/files/singer_sewing_machine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/fuwofapowatezejakanab.pdf
    • https://cdn.shopify.com/s/files/1/0439/4863/8363/files/nobexogafomujowafajigip.pdf
    • https://cdn.shopify.com/s/files/1/0429/5645/6095/files/58055882559.pdf
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/tawawujugapixomuxusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5404/files/28932764349.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/67533754717.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e9.bin
484749ecebe1cce944ce5a136b8ea907d9f0d61e829d811240241ee3671cbffc
pdf-font-stream PDF embedded font (sfnt) at offset 0x63E9 5312 bytes
font_01_sfnt_off000075c9.bin
262d31f054106863a02b71120ef0efb92866a783141835f6d907ff58a20e5d16
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C9 9956 bytes
font_02_sfnt_off000097ce.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x97CE 4324 bytes