Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b70dcace9e6599…

MALICIOUS

PDF

41.0 KB Created: 2020-08-16 20:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e16365f5c5d26ea2c49f43a082fb22 SHA-1: 018d432dacb258e4119efc4f78e3a9e10b44a0f6 SHA-256: b8b70dcace9e6599eda349ba8d9585058c9a7fc932cefd2882e542b11cb2653a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also contains a PDF link farm heuristic, with many links pointing to Shopify domains, one of which is 'jumera.pdf'. The document body contains garbled text but includes the malicious URL, suggesting an attempt to disguise malicious content within a seemingly legitimate document. The primary attack pattern involves luring the user to click on the malicious redirector URL.

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/pify?keyword=dynamics+crm+dynamic+worksheet+import
    • http://files.mshsiao.com/uploads/1/3/1/4/131453450/8ebd0bb1.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3899/files/jumera.pdf
    • https://cdn.shopify.com/s/files/1/0440/2659/3445/files/97725264968.pdf
    • https://cdn.shopify.com/s/files/1/0431/8009/7687/files/driver_abstract_nj.pdf
    • https://cdn.shopify.com/s/files/1/0430/3264/1689/files/types_of_shapes_and_their_names.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/47657671602.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/gegezozobuniraler.pdf
    • https://cdn.shopify.com/s/files/1/0429/4128/4518/files/43209040443.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/strategyzer_customer_profile.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/12092633924.pdf
    • https://cdn.shopify.com/s/files/1/0440/2659/3445/files/68422267386.pdf
    • https://cdn.shopify.com/s/files/1/0428/8102/4159/files/woraf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/factory_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/46314800698.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_off0000623e.bin
a2b7bdf5a72553f70edb83f132e0407f964649f2ac31f98a0e2a102f2c1c572b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623E 5536 bytes
font_01_sfnt_off000074fa.bin
2eabf3e041ed4becbfec3ebe8f90a6307c60f0bd1a24564c3a3d1b8fa8826975		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FA 10052 bytes

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