Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7683004314e1080…

MALICIOUS

PDF

39.9 KB Created: 2020-08-24 08:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91e4fbe540a39b1c613dd403f3da56b1 SHA-1: eafa00194faa87ec170fcbee45037c87a84ffc8a SHA-256: e7683004314e10808486ac2fc5c8c2eac1ace98f363f44d775a38dfb2e683e51
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many of which point to benign Shopify URLs, likely as a camouflage. The document body, though heavily obfuscated, contains the target URL and references sheet music, indicating a lure to entice clicks. No scripts were extracted from this sample.

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.cc/pify?keyword=greensleeves+sheet+music+flute+and+piano
    • http://files.oceanfrontsugargliders.com/uploads/1/3/1/4/131407088/12f283.pdf
    • http://zubafot.hsgsigns.com/uploads/1/3/2/7/132710797/porerevi.pdf
    • http://files.fairwindsllamas.com/uploads/1/3/0/7/130776607/bigomefumapole.pdf
    • http://files.journeystheroadhome.org/uploads/1/3/2/6/132682882/2304856.pdf
    • https://cdn.shopify.com/s/files/1/0438/9643/8936/files/pikavomerodele.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4664/files/45707688974.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/17901502139.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/banezixaxasixilosejakek.pdf
    • https://cdn.shopify.com/s/files/1/0454/5645/7880/files/57654138331.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1041/files/mazujazob.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1576/files/royden_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9198/4535/files/pitoxinurizebuxekuvagidug.pdf
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/mapa_politico_europa.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_off00005d91.bin
447c15a6994e89420955c8eb4a2d384a45794257bd5b2251149908e009c603f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D91 5484 bytes
font_01_sfnt_off00007014.bin
14d11b3ffa84c224bead986320bef745aca7f72523bf7979bddaa6f1a9cac766		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7014 10212 bytes

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