Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d5c53bd6cf6e02…

MALICIOUS

PDF

41.6 KB Created: 2020-08-14 19:41:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00c907f7cd79c598c8b0e0a8c3d2d526 SHA-1: e58b6055c51de50a8e047a83ca88408d8c7c739e SHA-256: 30d5c53bd6cf6e020121bfeaa0769dbe1d14033368ef82d5b127cc05bbfc76c9
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a download for 'best sims 4 mods'. This suggests a social engineering lure to trick users into visiting a malicious site. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely as part of an SEO spam campaign. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=best+sims+4+mods+to
    • http://files.rebeccakotz.com/uploads/1/3/1/3/131380600/393eba1fa2869.pdf
    • http://files.poodledynasty.com/uploads/1/3/1/6/131636655/e91eb696446dea8.pdf
    • http://files.michellesbargainstyle.com/uploads/1/3/1/4/131437554/482826766c6.pdf
    • http://gufora.fshockeyacademy.com/uploads/1/3/0/8/130813528/9164855.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/introduction_to_financial_accounting_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/31020554160.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/florida_physical_therapy_jurisprudence_exam_practice_questions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/96756611161.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/sorobewevoregusam.pdf
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/biodata_sample_for_marriage.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/star_method_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/14802011729.pdf
    • https://cdn.shopify.com/s/files/1/0434/2962/6017/files/saniliduvaxepepakifuw.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6629/files/list_of_synonyms_words_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/95888941486.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/although_however_despite.pdf
    • https://cdn.shopify.com/s/files/1/0437/2063/8632/files/tuxosipikenub.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/pusijelafitibediwefew.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/xokizo.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_off000066dc.bin
af76e8e4fd003a946108c9540d87711df94297dd2d4bc4b0fd88cd0ad7b8ca4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x66DC 4772 bytes
font_01_sfnt_off0000770b.bin
d518d687aebd323b02a85e59e1f5e06ec5cc0aaaf0035b3de695fbd0af4df180
pdf-font-stream PDF embedded font (sfnt) at offset 0x770B 10052 bytes