Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3620a77e6752bf…

MALICIOUS

PDF

35.8 KB Created: 2020-08-11 15:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 465b47ce8e28b4646cc610157afc4045 SHA-1: e2c32a4f72bc566c9e86af4cf8c067834ede3212 SHA-256: 7d3620a77e6752bf27ced2dc190a3565063cd20c6e37ae8535377cdfbe56bd39
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=adjective+noun+worksheet+pdf', suggesting a lure to a malicious site. The presence of a link farm further indicates an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

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.cc/pify?keyword=adjective+noun+worksheet+pdf
    • http://files.rollatropicalsno.com/uploads/1/3/0/8/130874451/tadem.pdf
    • http://files.alphaconllc.com/uploads/1/3/1/4/131453024/fomagukinote.pdf
    • http://files.whiteandkennedyancestry.com/uploads/1/3/1/8/131856392/d81b431.pdf
    • http://files.tasteofmissouristroll.com/uploads/1/3/1/4/131438776/5110d60.pdf
    • https://cdn.shopify.com/s/files/1/0430/9601/5002/files/49528945435.pdf
    • https://cdn.shopify.com/s/files/1/0430/5489/1161/files/how_to_boot_from_usb_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5398/files/98337662677.pdf
    • https://cdn.shopify.com/s/files/1/0435/0715/5110/files/data_engineer_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41078692832.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/wuresifivuselobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/soxebudajemu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/18347154025.pdf
    • https://cdn.shopify.com/s/files/1/0451/8104/2839/files/dubai_travel_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/77109629848.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8992/files/45528996117.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridojunewosinojep.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/spanish_to_english_dictionary_free_download.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_off00004dac.bin
97e2319574a218808ff2a35cc0fedc21fd01a2a6f0d6511c9ee033ba2935124d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAC 5280 bytes
font_01_sfnt_off00005fba.bin
86ff68c4634c6ff20400c69547306d12a3125278c6c60a1cb73dadeae78dee6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBA 10164 bytes

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