Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1cb5d49e81a83c7…

MALICIOUS

PDF

41.8 KB Created: 2020-08-03 08:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cbd4404dc76c6255ebf3f2d5b95621e SHA-1: 6c1fbe9427cc6b59fa6c3ee39b3ea892c333a79d SHA-256: e1cb5d49e81a83c73d02cbd0e5e3af0367416def740314d85863825d12e5935b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=binding+of+isaac+angel+room', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous Shopify links, while some are benign, contributes to the overall SEO poisoning or link farm tactic.

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/pify?keyword=binding+of+isaac+angel+room
    • http://files.southloupvet.com/uploads/1/3/0/7/130738666/de99b778.pdf
    • http://files.thewoodroom.co.uk/uploads/1/3/2/6/132696111/6626683.pdf
    • http://files.imagickaonline.com/uploads/1/3/1/6/131606360/a0147ac226.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/55907064768.pdf
    • https://cdn.shopify.com/s/files/1/0428/2744/8476/files/87471911870.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/74724544361.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/68668796480.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/62856505184.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/fiwoparoduguferidubejelod.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/luzemepuwajunaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/1424/8857/files/51864428907.pdf
    • https://cdn.shopify.com/s/files/1/0438/7805/6091/files/ruwogujelawedonesiperejek.pdf
    • https://cdn.shopify.com/s/files/1/0430/7520/7322/files/24299429072.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/wovuboxepeminapun.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/15993633899.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_off00006470.bin
723b4ddf5df90302b375c19aafebaf4f2e60ec1168aca6f4105123349709ff8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6470 5388 bytes
font_01_sfnt_off000076bb.bin
7ca2408d2e0ccec5f70955b9ae080dfa9d1084e0e2fd6cfd2772b233c11ed526		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BB 10688 bytes

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