Malicious PDF — malware analysis report

Static analysis result for SHA-256 f541ae28dd814bf2…

MALICIOUS

PDF

55.5 KB Created: 2020-08-30 00:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68fc6ed910fb27e949ab4c37a9e31257 SHA-1: 7c5214dc4bc6bc7ac2b3100f5b1f46ebff29a865 SHA-256: f541ae28dd814bf245bc97622d5a7b2cd3ca3322c0c1d1222adcc78ef8f4cc5f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=i+got+the+hook+up+2+full+movie+123movies'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to benign-looking PDFs hosted on Shopify, likely for SEO manipulation or to appear legitimate. The presence of a 'download button' heuristic further supports the lure to click the malicious link. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=i+got+the+hook+up+2+full+movie+123movies
    • https://cdn.shopify.com/s/files/1/0463/0872/0805/files/brembo_racing_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1218/files/taxonomic_classification_of_algae.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/appointment_of_auditor_in_agm_format.pdf
    • https://cdn.shopify.com/s/files/1/0447/9025/1681/files/sejuviwidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/vuwufobisibenozimibo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/arminianos_e_calvinistas.pdf
    • https://cdn.shopify.com/s/files/1/0448/9651/8299/files/ravav.pdf
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/99155889377.pdf
    • https://static.usrfiles.com/ugd/9f6a24_85bbe32c13a743d6bba5c569b54664d5.pdf
    • https://static.usrfiles.com/ugd/b3bc21_fab1b4b2137d48bd93da6549e98c2153.pdf
    • https://static.usrfiles.com/ugd/b8c837_632dc816256b42d1bbeacd3c617a18c7.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/babufomalunadi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/broadsheet_brisbane_italian.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_off00008498.bin
1c4e97ac301494425dc1440411570dd6ebec4f13f3fd9da602a42164f4c4e581
pdf-font-stream PDF embedded font (sfnt) at offset 0x8498 5420 bytes
font_01_sfnt_off00009711.bin
8bb18cccb1372e8415e329a9579d0bfe4cf5fa82b99f3b44969a7e5fb5d39f12
pdf-font-stream PDF embedded font (sfnt) at offset 0x9711 10648 bytes
font_02_sfnt_off0000bb89.bin
723e6034cfa8adeebabcb44fcd9a81d05c7492831ad3e7dd1a7a87e114838b67
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB89 16064 bytes