Malicious PDF — malware analysis report

Static analysis result for SHA-256 8067d76b533a0d02…

MALICIOUS

PDF

43.8 KB Created: 2020-09-01 06:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9489edc1f3288d5878dfdeb6355dfba8 SHA-1: faf07ce610996203655f200a90b2b0ac317bb0de SHA-256: 8067d76b533a0d0208a5c753deba16d1d87d8a222d06597e124de05c78dbd42a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=clevedon+court+nursing+home+cqc+report', which is flagged as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through numerous seemingly benign links.

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/wix?keyword=clevedon+court+nursing+home+cqc+report
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/nelajiminuxukudalukej.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/85277281785.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/you_can_win_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/fajukaferolezovunakomuro.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2503/files/xugofipedefe.pdf
    • https://cdn.shopify.com/s/files/1/0439/4975/2478/files/performance_budget_definition.pdf
    • https://cdn.shopify.com/s/files/1/0435/8560/1695/files/22781996121.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1029/files/hootsuite_we_are_social_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/8883/0873/files/conjuntivitis_bacteriana_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/aswamedham_naa_songs.pdf
    • https://cdn.shopify.com/s/files/1/0437/8450/3453/files/familias_angiospermas.pdf
    • https://cdn.shopify.com/s/files/1/0440/6371/9574/files/manual_de_epidemiologa_y_salud_pblica_panamericana.pdf
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/vomofonegu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1649/3976/files/moworeziximif.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/ashrae_heat_load_calculation_spreadsheet.pdf
    • https://static.usrfiles.com/ugd/b8c837_b598d61539d341b69596c25235f27f7c.pdf
    • https://static.usrfiles.com/ugd/696b8a_212a8a84a1e04838ab8a208801b54028.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_off00005f11.bin
dc9f7362417a644db26a8bc28b6ef58aac61898f7d5d3057f87110e9cb483c39
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F11 5368 bytes
font_01_sfnt_off00007126.bin
6a54143a85857e1dd37598df6cfb9268092fae728397b73c562dd958c6535334
pdf-font-stream PDF embedded font (sfnt) at offset 0x7126 10300 bytes
font_02_sfnt_off000093dd.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x93DD 4324 bytes