Malicious PDF — malware analysis report

Static analysis result for SHA-256 b52ccac10d7ad244…

MALICIOUS

PDF

39.3 KB Created: 2020-08-31 17:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1aa056b8b6b116d9ebb4e1edb28142a SHA-1: 4e3628e9da85b974e6ba44f3e82272db209fc382 SHA-256: b52ccac10d7ad2447f60408202bc6740309e3c404e5cca9d4410e59f119379c3
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Power bi report server refresh dashboard', suggesting a social engineering lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, further supporting a malicious intent to distribute content or redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=power+bi+report+server+refresh+dashboard
    • https://static.usrfiles.com/ugd/5be868_48696515e88c4eaba5f3ffae18023eee.pdf
    • https://static.usrfiles.com/ugd/edb4a7_02c458e2abc74134ab384c4506b91029.pdf
    • https://static.usrfiles.com/ugd/74a852_72f3109e5c4d48b8b6b09136d48ff69a.pdf
    • https://static.usrfiles.com/ugd/cc03df_c1efffa60ca049969187fa25051c6b2b.pdf
    • https://static.usrfiles.com/ugd/79e0dc_666c8865e91c4a1bbc21fa4329c6f25b.pdf
    • https://static.usrfiles.com/ugd/8e1900_8436c0b76bc64959a26261aebaf3350a.pdf
    • https://static.usrfiles.com/ugd/6f9b04_3d12f13248ff4194a3a134dfe0bb51d3.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2089/files/49536408700.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/48322691260.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/gapufirepigezipixew.pdf
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/protocolo_eras_anestesiologia.pdf
    • https://cdn.shopify.com/s/files/1/0430/5063/1319/files/33763611218.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_off00005ad9.bin
f4fba26404b34387134d8480da4fdc1b9fecb62775f1545b2a2d4d41711ca006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD9 5392 bytes
font_01_sfnt_off00006d3d.bin
14252bf03d7928ab43ab8f4151e7bde52553c2476efd72230ec8bb45c2f16d7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3D 10340 bytes

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