Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc26e2b3d121efdf…

MALICIOUS

PDF

38.8 KB Created: 2020-08-30 21:12:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 910524906014896f58165697a43d14e7 SHA-1: b3c05dca65ef2586307faeb4353a038045eb5524 SHA-256: bc26e2b3d121efdf2dd3f05c7d9f05a49431cfebe8537378f542098158d43c05
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body suggests a lure related to 'streaming gratuit' (free streaming), which is likely a pretext to drive traffic to the malicious URL. The presence of numerous Shopify-hosted PDF files, while individually benign, contributes to a link farm strategy to potentially improve search engine ranking or distribute 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.cc/wix?keyword=merci+patron+streaming+gratuit
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/33376512914.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/37922698604.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/pebijaxesowes.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/90109292387.pdf
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/42919907352.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5023/files/kimovugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/western_union_online_transfer.pdf
    • https://cdn.shopify.com/s/files/1/0461/6755/6259/files/zofakukanaven.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9769/files/american_college_of_cardiology_guidelines_2018.pdf
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/sepaxeme.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/taxovulofowabarixadob.pdf
    • https://cdn.shopify.com/s/files/1/0433/6271/3754/files/centos_version_6._7.pdf
    • https://cdn.shopify.com/s/files/1/0434/7514/0761/files/ecg_test_report_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0448/0411/2545/files/firefox_applications_no.pdf
    • https://cdn.shopify.com/s/files/1/0448/3688/0545/files/becker_cpa_far.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/83598293690.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/free_8x12_shed_plans.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cae.bin
c308fdea75613f0a0ba483c0f2b9b924559847c14bac01cbaa4f2eac6ce42d3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CAE 5108 bytes
font_01_sfnt_off00005df6.bin
a2458a6a67324f95442a1da5df0262151369a127c8ceb7e0e05c84a7ff46944d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF6 9968 bytes
font_02_sfnt_off00008029.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x8029 4324 bytes