Malicious PDF — malware analysis report

Static analysis result for SHA-256 2999b5d5f5b85dc9…

MALICIOUS

PDF

41.8 KB Created: 2020-08-02 08:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 878e195a1415613ce35b469dd9fa7f0e SHA-1: 7fbe9e3f6c1a1c2a4a7c9f2eef4bc5b03b34c16c SHA-256: 2999b5d5f5b85dc94bf70f74ad59f0a2d7feadbea09eb733594c0c8211ab3537
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with many pointing to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=postgres+show+databases'. This suggests a tactic to either distribute further malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted, and the document body is largely unreadable binary data, but the link farm and redirector are strong indicators of malicious intent.

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=postgres+show+databases
    • http://files.watervillefederated.com/uploads/1/3/0/7/130740547/62f9771259f15d.pdf
    • http://files.ctkbedford.org/uploads/1/3/2/7/132740342/708d827c.pdf
    • http://files.michaelcroghanphotography.com/uploads/1/3/1/8/131856706/denamamawapofo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5057/files/drawing_a_heart_opengl.pdf
    • https://cdn.shopify.com/s/files/1/0432/3603/2680/files/50788872493.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/25183764729.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/zulilidiro.pdf
    • https://cdn.shopify.com/s/files/1/0436/0388/6238/files/jomezad.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/sujuluxigidorajuzi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/woxavekelivanivafevul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifizazuxapi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/wososuwivusev.pdf
    • https://cdn.shopify.com/s/files/1/0432/1650/2939/files/52878514687.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_off000063e3.bin
bac8e8bbf5ecfa577f90d03f990007af2cf41fb90f84480099ed63cd43d58870		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E3 5288 bytes
font_01_sfnt_off000075e6.bin
4611fd8bae984909d21063cb5a94f4d119185927faf69550f571353dfe34d18e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E6 10632 bytes

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