Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7dbb7c9b7ed60a…

MALICIOUS

PDF

36.1 KB Created: 2020-08-15 06:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1ad78791cb8f10b23e08ef5f00e58e7 SHA-1: 8db5254ec3a1cf9f3f4f3b25f97b21939f790675 SHA-256: fe7dbb7c9b7ed60a08827b48b8510a677e6c67813edde0be746984d758872b2b
150 Risk Score

Malware Insights

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

The PDF contains a link farm, with a primary malicious redirector URL identified as ttraff.com. This URL is part of a lure to download free templates, but it redirects to malicious infrastructure. The PDF also contains numerous links to Shopify, likely for SEO manipulation to increase visibility. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=free+vintage+floral+border+templates
    • http://files.ciardhamedia.com/uploads/1/3/1/4/131482954/josilusefovunujasa.pdf
    • http://files.thebrockenhursttaxis.com/uploads/1/3/0/8/130874110/lixoma-muvimof-kaxakujokejago-savoriviw.pdf
    • http://wusux.septorcorp.com/uploads/1/3/0/8/130874330/pavosone.pdf
    • http://karabax.msreevessaltus.com/uploads/1/3/1/4/131453247/300f5226e4a.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6948/files/ccie_routing_and_switching_version_5._1.pdf
    • https://cdn.shopify.com/s/files/1/0433/8604/4572/files/admin_assistant_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7562/4350/files/25947453914.pdf
    • https://cdn.shopify.com/s/files/1/0436/2030/3011/files/irs_form_8300.pdf
    • https://cdn.shopify.com/s/files/1/0432/8777/3342/files/rowutinudejujiverate.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/24385697525.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/15477466215.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7974/files/38039463747.pdf
    • https://cdn.shopify.com/s/files/1/0433/6438/4927/files/beethoven_sonata_10.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/lidevazelabonulotebaruda.pdf
    • https://cdn.shopify.com/s/files/1/0434/6304/9378/files/waiting_for_the_barbarians_poem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51851907441.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5142/files/21620334802.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/53393556149.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_off00004e84.bin
f10bfa98effdbd99c672cf41fc121ebdb907f87f9c4fbaec69e361af9d6a5f98
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E84 5516 bytes
font_01_sfnt_off00006132.bin
c0907e8550772bb3ffaca9820ce12a69fde4c466cd2a850360a428a3a0b35b26
pdf-font-stream PDF embedded font (sfnt) at offset 0x6132 9952 bytes