Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7b4730bd703746…

MALICIOUS

PDF

66.6 KB Created: 2020-08-11 13:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81a32c46e76dcd9a127d92d39319c293 SHA-1: 7cdd7e1125a8c04309337a498a507e2d737ce55d SHA-256: fb7b4730bd7037461a78a258dba84c07432618f6065f008fbc5e8440761d950c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with many links pointing to Shopify-hosted PDFs. The document body itself is heavily obfuscated but contains some of the same URLs. The primary attack pattern appears to be SEO manipulation or a link farm designed to distribute malicious content or redirect users to phishing sites.

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=deficiencia+de+vitaminas+en+ni%25C3%25B1os+pdf
    • http://files.finalfinishdetailing.com/uploads/1/3/2/7/132710655/levin_linebedanelu_vidaki_vukadidi.pdf
    • http://soxixo.tipsywine.shop/uploads/1/3/1/6/131606490/d58f8f0a7f1852.pdf
    • http://files.bluenosewoodworks.com/uploads/1/3/2/8/132815961/somokirolurujewikusi.pdf
    • http://voludap.logosnola.com/uploads/1/3/1/4/131453150/2990586.pdf
    • http://files.lbconline.org/uploads/1/3/1/3/131381464/pewezijidiv-gitujuwoji-xipes-geripajiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/perulafatasugaxajofo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdf
    • https://cdn.shopify.com/s/files/1/0449/0670/9159/files/email_writing_skills.pdf
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/brew_install_python3.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/vejokolenazobeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13002849425.pdf
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/mediturivuxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6518/0321/files/saxavodesusulanu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/fafamorikadidiwinod.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/59149402342.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/casio_fx_350ms_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82127534182.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0718/files/71982920126.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_off0000b51e.bin
4d6f2275bf460e3d148ba9146b7252becc3bbaac39dfdd0594915b464848d3e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB51E 5232 bytes
font_01_sfnt_off0000c69a.bin
23692bf4008751c8bde109fd419752506e3a4dbd9be0b32150ca7eb25978632e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC69A 11728 bytes
font_02_sfnt_off0000ecbd.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 4324 bytes