Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ba7379ed593836…

MALICIOUS

PDF

46.2 KB Created: 2020-08-29 22:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4e79f1301d1396560151e830257a310 SHA-1: 05602e86117f62f796921881b864353e4e4ea7d8 SHA-256: a9ba7379ed593836d8ed34603e5687d9a2cea0dcc14ef481d315e47b9571fe2d
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=mediatek+bluetooth+driver+windows+10+hp'. This indicates the document is designed to trick users into downloading potentially malicious content by impersonating a driver download. Another critical heuristic indicates a PDF link farm, with the first URL being 'https://cdn.shopify.com/s/files/1/0439/2094/9416/files/96629881697.pdf'. The presence of a download button lure further supports the malicious intent.

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.ru/wix?keyword=mediatek+bluetooth+driver+windows+10+hp
    • https://cdn.shopify.com/s/files/1/0439/2094/9416/files/96629881697.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/jodotodoxujuxekujadiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/zinurawegisowosakok.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5458/files/189234988.pdf
    • https://static.usrfiles.com/ugd/61b8bf_2ae4f9b7097b4899bb28d33b9e839c06.pdf
    • https://static.usrfiles.com/ugd/b8c837_11284874b64c4b7fb20ec187282ca080.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_a04c6cf43a0c44d498e058232cf1a3c8.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_2abdb51e65fb4d7c803ad53354608e22.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/81179637729.pdf
    • https://cdn.shopify.com/s/files/1/0434/4777/9478/files/seminar_evaluation_form_template_word.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_off00005be2.bin
17a1875ed960f1f821360777b7e9cea0a3726715fdd571f454c006b0d420407f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE2 5484 bytes
font_01_sfnt_off00006e8e.bin
e423c2dbe8d2a82db79a496bd206573208c8c5c98dae0b75abf9f628b185f09a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8E 15320 bytes
font_02_sfnt_off00009df5.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF5 4324 bytes

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