Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa49120c0e0bfd8…

MALICIOUS

PDF

36.0 KB Created: 2020-08-20 14:21:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c21e8449e3a97780586876de7b4ec71 SHA-1: 8580117e83ca27f7871471e757312d567c4dffa0 SHA-256: dfa49120c0e0bfd8ab1e4c5685a7bd9504515a8cb35c983473331ad524f6c698
128 Risk Score

Malware Insights

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

The PDF file contains numerous links, a significant portion of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a malicious redirector link to ttraff.com. The document body also contains a call-to-action phrase, suggesting a lure to click the embedded malicious link. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=i+stand+all+amazed+sheet+music+efy
    • http://files.carolenapier.com/uploads/1/3/0/7/130776594/7703579.pdf
    • http://files.charlottesarthistory.com/uploads/1/3/1/6/131606666/e3d3d7.pdf
    • http://files.appalachianaxeworks.com/uploads/1/3/0/9/130969358/f1d12df3.pdf
    • http://files.holisticways.com.au/uploads/1/3/0/7/130775182/mimosob.pdf
    • http://fetez.kollytrendz.com/uploads/1/3/2/7/132740805/lunosafuxesu_modidopipot.pdf
    • https://cdn.shopify.com/s/files/1/0432/9698/1147/files/49315751647.pdf
    • https://cdn.shopify.com/s/files/1/0447/9896/7974/files/lefimotewar.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/92233275017.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/24259347947.pdf
    • https://cdn.shopify.com/s/files/1/0434/9424/4516/files/miocardiopata_hipertrofica.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/84557217903.pdf
    • https://cdn.shopify.com/s/files/1/0437/1116/8663/files/fodusuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/5103/1447/files/ielts_academic_reading_tests.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jatud.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/aufklrung_epoche_literatur.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/58315925055.pdf
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/4767676947.pdf
    • https://cdn.shopify.com/s/files/1/0439/5896/0286/files/cis_benchmark_windows_10_1709.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/fumeniposuwopi.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_off00004f90.bin
81cb97c97c122d2cca36ce1b660c391649016c4a35dd554e9152b8b4198b1663
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F90 5256 bytes
font_01_sfnt_off0000614f.bin
cb9980810fd86591e1e1f335b5287dc1ded654b4279fbcabb08aa9fd2133c931
pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 9928 bytes