Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f581fa7cf4c462…

MALICIOUS

PDF

71.2 KB Created: 2020-08-27 14:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b45cb74aef073af8b6511cf630dcb113 SHA-1: 36a4d14f9adce857d32efaee64579f3d7b33778f SHA-256: 90f581fa7cf4c462890a11686a2a710a17b45cb635c9d06c928b8424c987178b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The embedded document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary goal is to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=coffre+d%2527outils+de+canadian+tire+mas
    • http://fodeti.nigelgorskiconsulting.co.uk/uploads/1/3/0/7/130775565/7805eb6002.pdf
    • http://gukew.msqg.org/uploads/1/3/1/6/131606069/rufepanevojib.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3475/files/zogoduzekinolifaruladipag.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2719/files/closed_form_poetry.pdf
    • https://cdn.shopify.com/s/files/1/0440/0444/2262/files/resume_cover_letter_sample_word_format.pdf
    • https://cdn.shopify.com/s/files/1/0437/5235/8049/files/van_halen_diver_down.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61238086127.pdf
    • https://cdn.shopify.com/s/files/1/0448/3586/4736/files/alexitimia_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/19697842508.pdf
    • https://cdn.shopify.com/s/files/1/0430/9109/9805/files/jakota.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/29094359156.pdf
    • https://cdn.shopify.com/s/files/1/0436/7984/2457/files/10750229567.pdf
    • https://cdn.shopify.com/s/files/1/0438/4115/9333/files/png_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/12426063586.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_off0000b6e9.bin
bae84e163e62984f629974cb2f7331be7c1bddd0774d38e7768e597b70287c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6E9 5108 bytes
font_01_sfnt_off0000c832.bin
cef6ff5291958ad6821c875dbc35f9c22ccca6ae154f5b1d754c9c754e651315		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC832 19392 bytes
font_02_sfnt_off0001000e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1000E 4324 bytes

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