Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba07444a689dac08…

MALICIOUS

PDF

42.4 KB Created: 2020-08-12 02:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a0e0898c92c7eb7d7f7434cf533d281 SHA-1: 7e42aaf3e93b6cb28627d7809305fd9d3c68db1b SHA-256: ba07444a689dac0815601e2ed074194bf9ea0a6ad1e4dc2b602a2ec89beacf42
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=ks2+maths+worksheets+year+3+pdf', which is also present in the heuristics as a critical finding. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution. 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.ru/pify?keyword=ks2+maths+worksheets+year+3+pdf
    • http://files.davefortuneserigraphy.com/uploads/1/3/1/0/131070920/tekupewut_nosesulamarez_jabuwifis.pdf
    • http://files.chantitdownradio.com/uploads/1/3/1/8/131871518/02bd4f5e6b0d210.pdf
    • http://files.borelgame.com/uploads/1/3/1/3/131383954/kimuselag-kozegoxuleboti.pdf
    • http://files.animalhealthcentre.ca/uploads/1/3/0/8/130874086/730ba6.pdf
    • https://cdn.shopify.com/s/files/1/0435/3005/9940/files/zinokexezirugenatux.pdf
    • https://cdn.shopify.com/s/files/1/0440/6712/7446/files/sadurolupabele.pdf
    • https://cdn.shopify.com/s/files/1/0436/0352/5794/files/dodge_neon_srt4_top_speed.pdf
    • https://cdn.shopify.com/s/files/1/0439/8071/8238/files/62453394410.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8695/files/29020358576.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/59678241641.pdf
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/auto_repair_work_order_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/clinical_chemistry_lab_tests.pdf
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/bunetupabetotelabok.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/92435266657.pdf
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/wiwikuxinuruvimovuvoreb.pdf
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/64975476140.pdf
    • https://cdn.shopify.com/s/files/1/0437/7565/6097/files/migovezoverivuvewebel.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/
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/clinical_chemistry_lab_tests

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065e3.bin
7ea7c453970fe0eeac0ba0ff45ee181162ff15c8e6b67b72e448cc36ad3cfc8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x65E3 5772 bytes
font_01_sfnt_off0000797f.bin
ad2e9cac0b793c16aff72f13c63041618fab770c9f2d2212c19134c1219088d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x797F 10228 bytes