Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5f9fa7c3bc2353…

MALICIOUS

PDF

49.6 KB Created: 2020-08-31 04:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59c7fbb9fc7d5acba0d28511ba946ed0 SHA-1: 9397cd2600b6f6e65e4aca0ab4e8293a3a6f5598 SHA-256: cc5f9fa7c3bc23537ec454f2b9a010d5a2729e6f2de7750995c518abaf4bc587
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=minnie+driver+tv'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, including 'https://cdn.shopify.com/s/files/1/0437/9456/3229/files/denon_receiver_manual_avr-887.pdf'. The document body contains obfuscated text and the malicious URL, suggesting a lure to a malicious site under the guise of providing a manual.

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/wix?keyword=minnie+driver+tv
    • https://cdn.shopify.com/s/files/1/0437/9456/3229/files/denon_receiver_manual_avr-887.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/zetojapo.pdf
    • https://cdn.shopify.com/s/files/1/0461/8292/4441/files/catholic_bible_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/condescending_wonka_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/2974/9145/files/big_time_rush_season_4_episode_13.pdf
    • https://cdn.shopify.com/s/files/1/0435/5263/7091/files/openssl_wildcard_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/nozesijaxulofejegu.pdf
    • https://static.usrfiles.com/ugd/49be48_0dcfccc27f1349959613b9225ae5bd91.pdf
    • https://static.usrfiles.com/ugd/63022f_ae4dbe9ab9194198a7ba282010fd23fc.pdf
    • https://static.usrfiles.com/ugd/b4a829_2aa84817e4894976a2cada6fe992c193.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/happy_birthday_girl_images.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/number_line_worksheets_year_7.pdf
    • https://cdn.shopify.com/s/files/1/0430/6537/6919/files/tipos_de_antiacidos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/bojufuxidelukesakanidez.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_off0000858e.bin
3cf97ef7fd8fef14f147b6bdb7e57dad56df32e99ecdb200c6407425c6caf07a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x858E 4464 bytes
font_01_sfnt_off000094d4.bin
89d15447c3ab017b021dd099109ad2accba3716b47af84af891295ae94daee37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D4 10768 bytes

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