Malicious PDF — malware analysis report

Static analysis result for SHA-256 c11149e28fa9526a…

MALICIOUS

PDF

47.9 KB Created: 2020-09-01 12:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdbba6fde5e0a8a14eeb2733e3dfdd2d SHA-1: 1d19086f7606573f78b3b7f8a67c1f4fc8c8263f SHA-256: c11149e28fa9526ae8c011764be12987f9c7137451e50f37f7f5d8c16db48899
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text related to 'Architectural graphics pdf' and the malicious URL. The primary intent appears to be directing the user to a malicious site, likely for further exploitation or credential harvesting.

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.cc/wix?keyword=architectural+graphics+pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/sefedi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5638/8510/files/daxuzofuresizakoxupa.pdf
    • https://cdn.shopify.com/s/files/1/0451/9932/7383/files/85887114226.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/16390862353.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/17904317167.pdf
    • https://static.usrfiles.com/ugd/9e14ca_19e4f8cbcf4c48338b90836557bfe545.pdf
    • https://static.usrfiles.com/ugd/b8c837_ac398deca5044b7582632b355e49fdfb.pdf
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/kuwebuxujolobilomivos.pdf
    • https://cdn.shopify.com/s/files/1/0431/9707/1524/files/gulolibutemafoviza.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006126.bin
09d0e8cc84d5cf49538c22e84829236ade0414db06b635de73fabc531c5a5198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 4692 bytes
font_01_sfnt_off000071b5.bin
471b9d98c3758a5f6276392fbd26f8faf2827360b28d5c208ac9796b6f9e9bb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B5 5072 bytes
font_02_sfnt_off00008306.bin
33b66b55d7c89bd1d635a1fd927e5f02d26c152c3ec2102afdd0a9205eeb0917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8306 9908 bytes
font_03_sfnt_off0000a4f0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F0 4324 bytes

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