Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7452785f9c2296e…

MALICIOUS

PDF

45.2 KB Created: 2020-08-29 02:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eb791bb85fe2d9e9cd8615d71dedc73 SHA-1: 90c1321fe405089e0a8ea34936742f95423af25d SHA-256: b7452785f9c2296ef79aebb4164e5b62c8cc3c5b13144eee6286fb02f2a1833a
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL and references to 'Emotionally focused couples therapy', suggesting a lure. The presence of numerous PDF links, many hosted on Shopify, indicates an attempt to manipulate search engine results or distribute further malicious content. 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.ru/wix?keyword=emotionally+focused+couples+therapy
    • https://cdn.shopify.com/s/files/1/0432/9409/7576/files/83317086371.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/viva_la_vida_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1582/files/94035380793.pdf
    • https://cdn.shopify.com/s/files/1/0434/6386/8573/files/miracle_box_2.27a_setup_free_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a5950b39cac43949f79280073d39437.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/dosibolevikoxilazinowajed.pdf
    • https://cdn.shopify.com/s/files/1/0433/6392/6174/files/bupukaromexizalumeza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/37630414356.pdf
    • https://cdn.shopify.com/s/files/1/0437/6802/1141/files/eastern_nc_saltwater_fishing_report.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_off00007357.bin
9b6ca9fec1ea3da378ef538e6aca0e94a4be272e1447c238b622ca432cea214d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7357 5452 bytes
font_01_sfnt_off000085c0.bin
d7c1e790938515e123e5eb6315b8da6532eab718ad67bb2b713f47084b369733		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85C0 10092 bytes

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