Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac4218c19f120985…

MALICIOUS

PDF

45.8 KB Created: 2020-08-22 06:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aa028f6fc6c2a1fabfa0acd974092e1 SHA-1: 3d5e6083831a4fc63aadcfdf5e6c8993ff5dfe41 SHA-256: ac4218c19f120985673121a8f22f9211740aa4fa339c2330e9576c61c53d55a1
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a primary link to a known malicious redirector at `https://ttraff.com/pify?keyword=email+formal+en+ingles`. The document body, though heavily obfuscated, appears to be a lure for an email template. The presence of numerous Shopify-hosted PDF links suggests a link farm designed to obscure the malicious redirector. No scripts were extracted from this sample.

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=email+formal+en+ingles
    • http://files.cordwainerproductions.com/uploads/1/3/1/6/131606546/bunusobod_lijuludelibale_vagiwukemiselum_nowowofogaxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/15554864835.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/jinob.pdf
    • https://cdn.shopify.com/s/files/1/0438/1078/3394/files/61281072713.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/best_day_of_my_life_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0436/7518/9401/files/86845574708.pdf
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/87477486447.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/volantino_esselunga.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/payment_of_gratuity_act_1972_bare_act.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/dekokaze.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/wekofawepatexapijusaxipo.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_off000060da.bin
5c2c1d0749f775b3a5ba99568e4d7c9b741d334094306f2cacd8e5b7882d3c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DA 5044 bytes
font_01_sfnt_off000071e7.bin
a2108d14c062067552e9502a43a09d1286689c987f5c9228b1f33e914e5b91b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E7 10396 bytes
font_02_sfnt_off00009524.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9524 16312 bytes

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