Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d739907ba87d472…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 10:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55a3b3361fdd0c9e20f0fee958dba89f SHA-1: 301b6f786b74cfb93db78613c82eedfa1eac1877 SHA-256: 4d739907ba87d4722c6c7aa7f92a54d4e15cfcbd9dbea8347bb05b04b26775ab
120 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, specifically pointing to 'ttraff.com'. The document body also contains this URL, presented as a lure for 'google sheets templates calendar'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify-hosted PDFs. The primary malicious URL is https://ttraff.com/pify?keyword=google+sheets+templates+calendar, which likely leads to further malicious content.

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=google+sheets+templates+calendar
    • http://wemurud.mts-wines.com/uploads/1/3/2/3/132302868/mifunofusawexarafi.pdf
    • http://files.jonathangillespie.net/uploads/1/3/2/6/132695306/16fbc181d4a.pdf
    • https://cdn.shopify.com/s/files/1/0435/9825/0146/files/what_causes_multiple_personality_disorder_yahoo_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/sutugetodapagejenezuzas.pdf
    • https://cdn.shopify.com/s/files/1/0435/1921/3727/files/fipusiziriposo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/is_lsd_addictive_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/85226948358.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/33746109552.pdf
    • https://cdn.shopify.com/s/files/1/0429/0723/8567/files/oxford_rhyming_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/benegaraxuvexebanebes.pdf
    • https://cdn.shopify.com/s/files/1/0461/8544/7587/files/sezigeperujew.pdf
    • https://cdn.shopify.com/s/files/1/0438/4548/4706/files/maternity_dresses_formal_near_me.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/29947696196.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_off00006537.bin
466dde1cac0bab106edff3f4fed926550a89e1fd75005166c9755e69de6898de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6537 5520 bytes
font_01_sfnt_off000077d5.bin
1cf409de2052e8f38c619997a0fa45fd30f18d7cd1d81a31c6258cf6c6c4659f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D5 10280 bytes

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