Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9fe93d9cb9fc2a2…

MALICIOUS

PDF

42.3 KB Created: 2020-08-11 22:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef102a07ff2b9d6a6b7d3bc6e4959d02 SHA-1: b383ee96f15b99dc2158fd3e4e1c3f176f75fdab SHA-256: a9fe93d9cb9fc2a298cb6da7c14c0d0b12a0ae02b9662c4568ba087dbc9a9c83
130 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'ttraff.ru', which is flagged as malicious. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and several other Shopify-hosted PDF links, suggesting a lure to download potentially malicious content. The presence of a download button heuristic further supports this. No scripts were extracted from this sample.

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/pify?keyword=alberto+moravia+pdf+download
    • http://files.renaultsparesscotland.co.uk/uploads/1/3/1/4/131438142/6912985.pdf
    • http://somobone.abesboatrental.com/uploads/1/3/0/7/130775350/e942b68b.pdf
    • http://files.ipmed.org/uploads/1/3/1/8/131871433/4655583.pdf
    • http://muteni.angeldesignsbyjane.com/uploads/1/3/2/8/132816066/goxajav.pdf
    • http://files.powdermillbusinesscenter.com/uploads/1/3/2/6/132695392/cd9536b798.pdf
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/applied_mathematics_1.pdf
    • https://cdn.shopify.com/s/files/1/0437/6274/5501/files/pujivoratenugowobuboror.pdf
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/60915420859.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0074/files/apc_smart_ups_1500_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/pavape.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/sogomebap.pdf
    • https://cdn.shopify.com/s/files/1/0429/4030/1478/files/bojopujovurute.pdf
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/sikes.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/zewatuzimef.pdf
    • https://cdn.shopify.com/s/files/1/0434/0586/9217/files/lebajatakolave.pdf
    • https://cdn.shopify.com/s/files/1/0434/4171/7414/files/pdf_to_word_converter_mobile_app_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8340/6239/files/66115488059.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_off0000673c.bin
c60d18fe5b065d676d89b968a46c158a07d2684120467d7fa008af9598f2880b
pdf-font-stream PDF embedded font (sfnt) at offset 0x673C 5292 bytes
font_01_sfnt_off0000792f.bin
bc8c59d8a30dac718b1dc96b0c908c27108f7e7ab1879287428c2dff99e9df74
pdf-font-stream PDF embedded font (sfnt) at offset 0x792F 10332 bytes