Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0faa083cbce666…

MALICIOUS

PDF

47.7 KB Created: 2020-08-19 04:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ca8390b5fdcf18a0834a43355ec29bc SHA-1: 38cfed265c6130f7777a88d9a7db1baf912ed3eb SHA-256: ab0faa083cbce66629f3ce07d78d286dfb6ecd284c64cc5f1e22b734e83a2ed5
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'British english pronunciation exercises pdf' and includes the malicious URL. This suggests a social engineering lure to direct users to malicious infrastructure.

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=british+english+pronunciation+exercises+pdf
    • http://pabatew.alanflemingtournament.net/uploads/1/3/2/6/132695924/popogatawel-wimifepitojojun-pavusufe-veritegovo.pdf
    • http://files.robindaviesconsulting.com/uploads/1/3/1/4/131453284/67e560624087.pdf
    • http://files.jacobccooper.com/uploads/1/3/1/4/131437561/5a5e5deb161.pdf
    • http://files.somethingsomethingtheatre.com/uploads/1/3/2/6/132695663/f00ffa2e44fae.pdf
    • http://files.wilderblubordercollies.com/uploads/1/3/2/6/132681307/rakopagobufep.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/simple_template_html_css_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3952/1958/files/xidimoxiramasumutovidif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/letowopebofowebizuwir.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4337/files/62354694411.pdf
    • https://cdn.shopify.com/s/files/1/0434/8634/7414/files/kimazetoduzumu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/41513871382.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/98994023209.pdf
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/bcbstx_enrollment_application_change_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1319/files/bedelemojixuruxopuledaxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/sevajejitipej.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/95272329394.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_off00006917.bin
06a9266efec998f21103f8c55b4360a9dbffa3e62e1332608945dda6d041e7c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6917 3292 bytes
font_01_sfnt_off00007500.bin
0b771f350413991b5bbd62df1d460fde22f9850cd3a9b4803fa6b0db004d4cc3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7500 5532 bytes
font_02_sfnt_off000087d4.bin
87e5c7d2d5e83f2936a5b3b242d8570169d3c044b293860297c7adb62e85d49e
pdf-font-stream PDF embedded font (sfnt) at offset 0x87D4 12360 bytes