Malicious PDF — malware analysis report

Static analysis result for SHA-256 d09911b75524db4e…

MALICIOUS

PDF

49.0 KB Created: 2020-08-17 09:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2950f433c0a767d6e59e9119434b751 SHA-1: 68fb1f56e6e493e3a630a85993f63d97d19330af SHA-256: d09911b75524db4e72938330d122bc570f2254270a11cb8fdb33aed6f9d23db4
150 Risk Score

Malware Insights

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

The PDF contains a deceptive "cease and desist letter" theme to trick the user into clicking a malicious link. The primary malicious URL, `https://ttraff.com/pify?keyword=cease+and+desist+letter+defamation+australia+template`, is identified as a redirector. The document also hosts a large number of links to other PDFs, likely for SEO manipulation or to obscure the malicious intent. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

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=cease+and+desist+letter+defamation+australia+template
    • http://files.chuckpisa.com/uploads/1/3/2/6/132681504/f50e46.pdf
    • http://files.en.cosmingheorghe.net/uploads/1/3/1/4/131438137/42331f0f0.pdf
    • http://files.konect2us.com/uploads/1/3/1/6/131636946/4de0f6037.pdf
    • http://nulisom.careensmobilemassage.com/uploads/1/3/2/6/132682883/015db2ea5d.pdf
    • http://files.woodlawnpottery.com/uploads/1/3/0/8/130813325/7797810.pdf
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/19960187417.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/nosumaginirita.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/add_local_project_to_github.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5303/files/60019689558.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/29878061118.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/onkyo_firmware_update.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/69385977876.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2406/files/snapchat_hack_tool.pdf
    • https://cdn.shopify.com/s/files/1/0437/3531/8689/files/70095617340.pdf
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/e_business_strategy.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_off00007357.bin
31768afcf059ac97c8a87ae1ee69ca38bb9bd63a474459d0d626d09990bf20be
pdf-font-stream PDF embedded font (sfnt) at offset 0x7357 5092 bytes
font_01_sfnt_off00008484.bin
0af74580a9f91bc47a2f1ecd0032bf0172773f22711c40e26704b086faa36bd1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8484 10496 bytes
font_02_sfnt_off0000a85c.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA85C 4324 bytes