Malicious PDF — malware analysis report

Static analysis result for SHA-256 d278690d75e93220…

MALICIOUS

PDF

35.2 KB Created: 2020-08-21 09:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b8554aca4ba31706a7a7f50a6179ba1 SHA-1: 6cb76adb91f9e00d25c863b45844bcea1c70793e SHA-256: d278690d75e9322096a2b42a457ee0da1e93d3519e8d55bb9161d3d1c92e6615
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.ru/pify?keyword=folktales+myths+and+legends+worksheets'. Additionally, the document exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files, many of which are hosted on potentially suspicious domains. The primary intent appears to be to redirect users to malicious infrastructure through deceptive links.

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/pify?keyword=folktales+myths+and+legends+worksheets
    • http://gemiba.jebusskateboards.com/uploads/1/3/0/7/130775903/6ed3e6c15.pdf
    • http://xuvokitod.earlynutritionmeeting.com/uploads/1/3/1/4/131437378/9604250.pdf
    • http://pigeloja.ship504.com/uploads/1/3/2/6/132695569/segirivawiwevi.pdf
    • http://files.xclusive-footwear.com/uploads/1/3/1/3/131384718/foget_kosatebewanoru_xiralijuf_saxeza.pdf
    • http://files.northcobbphotoclub.com/uploads/1/3/2/6/132682124/5822861.pdf
    • https://cdn.shopify.com/s/files/1/0434/0262/5178/files/94654047934.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/puzolibuxezosaxisikum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/3d_max_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/52637920976.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/bobubibarabavi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/sesofevasavufaxaderibilid.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/xojotatupe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/bullworker_exercise_chart_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/54891645354.pdf
    • https://cdn.shopify.com/s/files/1/0434/7923/6773/files/70770735473.pdf
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/dunab.pdf
    • https://cdn.shopify.com/s/files/1/0444/3766/8007/files/tepivurowixisejimapep.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/32417031835.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_off00004a52.bin
a090789cfd8fdbe01b8fe9815a0eeca465c91db2313e9bde246da15a37bfe419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A52 5452 bytes
font_01_sfnt_off00005ccf.bin
ebf488161772125749970258ae57645cc7171bac9dd71d0e53210ac41cc275fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCF 10428 bytes

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