Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4547ae7494cb44…

MALICIOUS

PDF

40.0 KB Created: 2020-08-05 13:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4133e5bb8bfd59e6d6acbe491ece659 SHA-1: feed95d34bf491b4346e7a19741ffcd97e8c5189 SHA-256: eb4547ae7494cb4468a9422c423534c12e7fa3970bcae4d0eaf9750f606e1c01
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify domains, likely for SEO poisoning or hosting malicious content. The document body, though garbled, contains text related to a 'flat rent agreement format pdf', suggesting a lure to trick users into clicking the malicious link. The presence of a download button heuristic further supports a malicious workflow.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=flat+rent+agreement+format+pdf
    • http://files.mariangardnerstudio.com/uploads/1/3/1/8/131856065/denita.pdf
    • http://files.rap-lin.com/uploads/1/3/1/4/131453031/sojula.pdf
    • http://files.austindemaille.com/uploads/1/3/2/7/132740435/kofarefawegetine.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1402/files/78528537568.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/febuxevabotesidimegug.pdf
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/20727158138.pdf
    • https://cdn.shopify.com/s/files/1/0438/3630/9666/files/75771663018.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/benzoato_de_sodio_propiedades.pdf
    • https://cdn.shopify.com/s/files/1/0429/2784/9639/files/56876328473.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/root_cause_analysis_handbook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16494210232.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/ceremonial_magic_and_the_power_of_evocation.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/fowogedekilizebo.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_off00006073.bin
9cae3e60fbd464460c1bccb7e3430e1b29ee0456df9990be5873c27554f4b240		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6073 5140 bytes
font_01_sfnt_off000071e2.bin
94f503c5b231a0d8b1415f2ade071e10f190dfda24802035f953b2029f095f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E2 9800 bytes

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