Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c78024ab59aa3f…

MALICIOUS

PDF

41.2 KB Created: 2020-08-10 15:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31c3fdb99659a9d77634126186f9c9e1 SHA-1: 7b7610c49d1667475ab9e81b9d0058946dad939f SHA-256: 95c78024ab59aa3fe4898e8bc4c287dfa170c60c34de508b5667f255afec4510
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a visible lure related to 'ethical hacking tutorial point pdf free download' and the malicious URL. The PDF also contains a mass external PDF link farm, with many links pointing to Shopify domains, but the primary malicious redirector is the most concerning IOC. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ethical+hacking+tutorial+point+pdf+free+download
    • http://dabusen.beatlesnow.com/uploads/1/3/1/4/131438464/dufotizixazi_xabasikabifiz_seneronunobirow_xawuvazawizerov.pdf
    • http://files.talbertsmaplefarm.com/uploads/1/3/1/3/131383842/1621410.pdf
    • http://files.igossuccesstech.org/uploads/1/3/1/3/131379716/milipetojome_livus_gebimogekegesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9507/2674/files/xitisekubofufakure.pdf
    • https://cdn.shopify.com/s/files/1/0432/4815/6835/files/class_11th_botany_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0491/8941/files/19771474208.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/kifubarijixu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/94474280183.pdf
    • https://cdn.shopify.com/s/files/1/0428/5916/7900/files/formatting_in_discord.pdf
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/rafagigopejunelipakuvuzif.pdf
    • https://cdn.shopify.com/s/files/1/0438/9509/5464/files/calibre_kindle_to.pdf
    • https://cdn.shopify.com/s/files/1/0430/2287/6826/files/57395716023.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/5th_grade_math_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/3_column_cash_book_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/lesavunutegivivufugituxal.pdf
    • https://cdn.shopify.com/s/files/1/0438/5030/1590/files/41842157489.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_off000061b0.bin
958b06315e44969b30cfde085abecf5abb33e69bd3ce5a595b9a7a721cc65858
pdf-font-stream PDF embedded font (sfnt) at offset 0x61B0 5352 bytes
font_01_sfnt_off000073ea.bin
64fd3d25c1825228759c1afce1ef624baf3a480a1c12bac13586098312a7bfe0
pdf-font-stream PDF embedded font (sfnt) at offset 0x73EA 10524 bytes