Malicious PDF — malware analysis report

Static analysis result for SHA-256 a95f1a6fae3cc725…

MALICIOUS

PDF

44.2 KB Created: 2020-08-17 08:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64e9932aac6157628fc48011a0f2daae SHA-1: e561fa7fb68f96a3201b77294e96da1453bf1a87 SHA-256: a95f1a6fae3cc725c1dd6f119c47988f549cfbfd420a5a59dc0b16cbd4f100e7
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'diabetes action plan template'. The link points to ttraff.ru, which is known malicious infrastructure. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, likely used to obscure the malicious redirector. The presence of a visual download button further supports the lure.

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=diabetes+action+plan+template+pdf
    • http://biwari.redfishcottages.com/uploads/1/3/2/6/132681947/lokevizomem.pdf
    • http://files.amykucharik.com/uploads/1/3/0/7/130775950/828605.pdf
    • http://lixuvim.businesslawtemecula.com/uploads/1/3/0/7/130739173/3809263.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/cable_tray_price_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/bellarine_second_hand_uniforms.pdf
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/doninefujowepobevof.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/customer_segmentation_models.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/bash_commands_in_linux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/worunizitaluxej.pdf
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/fuladakixixebos.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_off000070e3.bin
276fd192c10f29de86f6349e486fc7c7be6ac629031eaa107fa4626e8eeb120a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E3 5344 bytes
font_01_sfnt_off000082ee.bin
3564b6d8451380ca62672904db4ba340816b3d0301f102905ada1c4b22aa6003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82EE 9688 bytes

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