Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca27d812ba01c77f…

MALICIOUS

PDF

45.6 KB Created: 2020-08-04 18:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5476013333275791d50a301a7c2544f6 SHA-1: f16de5a8490419a1fd49c8dff5af2e565419afca SHA-256: ca27d812ba01c77f5b03605e89c856d7f6dd98356df461c62f9e5ffe6e42d16e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=non+parametric+test+pdf'. Additionally, it features a PDF link farm with numerous external PDF links, many hosted on cdn.shopify.com. The document body contains obfuscated text and the embedded URL, suggesting an attempt to lure the user to a malicious site.

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=non+parametric+test+pdf
    • http://files.marilynsyme.com/uploads/1/3/1/1/131163590/nosutavugekisukore.pdf
    • http://files.trdring.com/uploads/1/3/1/4/131437445/dibesejepijo_dozefexunile.pdf
    • http://files.jesswebbart.com/uploads/1/3/2/8/132814241/zawebutorowog_mojefem_badojijidarim_fatitobematepaj.pdf
    • http://files.glaquaponics.com/uploads/1/3/1/1/131164075/mosevelobiwub_xuwobadalo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2549/6221/files/wojatikipapetupuvubabas.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5760/files/betibopuwo.pdf
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/zifemometapotip.pdf
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/97941951555.pdf
    • https://cdn.shopify.com/s/files/1/0435/2969/9482/files/22045426478.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/82146542280.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7569/files/76182053209.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/kg_to_pound.pdf
    • https://cdn.shopify.com/s/files/1/0428/3868/7900/files/28741068356.pdf
    • https://cdn.shopify.com/s/files/1/0436/8764/1241/files/24514037136.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_off00007410.bin
92c62d6747dcdc3e2692cc0ecc8a1626f5e4efbdfc5b65f8d1577c645489deff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7410 5240 bytes
font_01_sfnt_off000085cf.bin
8c0e3765cde7c3faa6ee07212a7cec1ca2ba65f479fa3397da0300d54fc75948		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85CF 10424 bytes

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