Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a261cbd8b67f4e3…

MALICIOUS

PDF

59.6 KB Created: 2020-09-01 06:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ad628d2dbd1ef51dc7b7bd157cf64c5 SHA-1: 03399a70c0380b10de397afb29962d945980109d SHA-256: 7a261cbd8b67f4e37dd75387c5da66aa12d4e400f7e3653cf626fee10acc0308
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, embedding a large number of external links, many of which point to Shopify-hosted PDFs. Crucially, one embedded link directs to 'ttraff.ru', identified as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure, likely for further exploitation or credential harvesting.

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/wix?keyword=brom+error+sft++fail+4008
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/52225589292.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/19378741836.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/performance_parts_for_bmw_e46_330ci.pdf
    • https://cdn.shopify.com/s/files/1/0436/0860/4829/files/51516680100.pdf
    • https://cdn.shopify.com/s/files/1/0438/5941/1104/files/67475275357.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/93611036506.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/que_significa_epistemologia.pdf
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/3007086817.pdf
    • https://cdn.shopify.com/s/files/1/0430/3545/9738/files/business_trip_expense_report_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/vilomugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3901/files/youtube_2_wav.pdf
    • https://cdn.shopify.com/s/files/1/0457/5330/3196/files/kelamatowakojijusomemav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66456909559.pdf
    • https://cdn.shopify.com/s/files/1/0437/4488/6945/files/gojaxipapinivezorerixoteg.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1442/files/complete_ielts_bands_6._5_7._5_workbook_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/xujiviwabew.pdf
    • https://cdn.shopify.com/s/files/1/0436/1895/9523/files/how_high_pelicula_completa_en_espao.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/gamad.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_off000069a6.bin
bef7fdbb4d5c69a1be5b875014498857a52cd200b2c4414c7fb7bd27692e4285
pdf-font-stream PDF embedded font (sfnt) at offset 0x69A6 20976 bytes
font_01_sfnt_off0000ab6b.bin
e6a85fa945581a418afc4a22e4c4ea842a00c9f7dd37ad5eea5ee81bf262702b
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB6B 5384 bytes
font_02_sfnt_off0000bd9f.bin
9bb56571fc16af3346bcafac087e8d5c0b0e0822a9c27cc0901492682499b6a0
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD9F 10376 bytes