Malicious PDF — malware analysis report

Static analysis result for SHA-256 b127cc5c09443ce1…

MALICIOUS

PDF

52.4 KB Created: 2020-08-12 08:26:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7369a31350e6bf9abd0e28bac74fa3e4 SHA-1: e10bd3b12f5efea5d2c5e120fc1fa90bccac0081 SHA-256: b127cc5c09443ce1d4dc97748d728934067c8c5102f2755185bfd062d5976170
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/wb?keyword=codul%20de%20etica%20si%20deontologie%20profesionala%20al%20asistentului%20medical%20pdf', is flagged as a known malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites. 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/wb?keyword=codul%20de%20etica%20si%20deontologie%20profesionala%20al%20asistentului%20medical%20pdf
    • http://files.stjohnsstafford.org/uploads/1/3/0/8/130814115/2512.pdf
    • http://bibuno.beccaspeert.com/uploads/1/3/1/4/131453990/dukudum-sorowujega-sujim.pdf
    • http://tisosip.wheaten.se/uploads/1/3/0/7/130775732/9ba9f6f.pdf
    • http://todixodo.gingerdaniels.com/uploads/1/3/1/6/131637881/2032844.pdf
    • http://files.championshipgear.com/uploads/1/3/1/4/131453045/8377260.pdf
    • https://cdn.shopify.com/s/files/1/0448/0755/3184/files/elementos_arquitectonicos_del_diente.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9966/9151/files/antes_de_morirme_libro.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7095/files/50003026453.pdf
    • https://cdn.shopify.com/s/files/1/0432/5012/2916/files/sanoraxuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/4574/6848/files/94932553333.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/vobaxavovobusitugubu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7568/1947/files/cfa_level_2_study_plan.pdf
    • https://cdn.shopify.com/s/files/1/0447/1462/3130/files/pawotivikuxojanuguzud.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/bsc_agriculture_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/gixigusiwematajirofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/81125357206.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/43252562802.pdf
    • https://cdn.shopify.com/s/files/1/0435/5240/7704/files/bovavegegetisisusarilox.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_off00008b83.bin
3d1ccd2aea64ab005d9165c35eb3e860b811d785bb05796c3e4d041bdff85c75
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B83 5380 bytes
font_01_sfnt_off00009db5.bin
c18a1851b8993efd8ccf1b7c80ac134610f992246a8f4815102b94be3db96ea6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB5 11336 bytes