Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6d43b4f299abdd…

MALICIOUS

PDF

48.1 KB Created: 2020-08-19 18:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91bfdff97c384005549f6038a4a0e288 SHA-1: 7d79530bfcefb1a1ce14e82d20ef68a6c51d9a8e SHA-256: ce6d43b4f299abddaae8350c676b537b6125cb32e9219639bee8909b09c3ba50
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic. 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=comparative+and+superlative+form+of+clever
    • http://nakuwor.sharqidance.com/uploads/1/3/0/8/130874391/duweriduf-vefosamibo-nanaj.pdf
    • http://files.mediasourceamerica.com/uploads/1/3/1/8/131856125/bodegofatugiboru.pdf
    • http://files.inthelaughterlocker.com/uploads/1/3/2/3/132302732/9162444.pdf
    • http://zobataved.walkbikecolumbia.org/uploads/1/3/0/8/130814855/kamimelogokaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/rokifi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0839/files/mofif.pdf
    • https://cdn.shopify.com/s/files/1/0452/9078/2881/files/la_bella_durmiente_cuento_original.pdf
    • https://cdn.shopify.com/s/files/1/0433/0435/3956/files/62582035630.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bagubiginapir.pdf
    • https://cdn.shopify.com/s/files/1/0447/9719/8487/files/sap_accounts_payable_transaction_codes.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/kapalomedalejuve.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/48406633337.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5190/files/open_file_php_browser.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006063.bin
655bec1338b80700314d3eb909d8c3d7616b625b34cb5b1f48e689b59984ddc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6063 5264 bytes
font_01_sfnt_off00007235.bin
450660fbf9d84795e041407cb886bc71edf88871c7a6b9545a22daa87a6e3850		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7235 13972 bytes
font_02_sfnt_off00009ebd.bin
73f6f760a67782f27700c3ed047511a210a1e3765a9cc4fd416c63ff6a2522af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EBD 16060 bytes

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