Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f6a982d1699fdc…

MALICIOUS

PDF

45.9 KB Created: 2020-08-07 23:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e1b73b3cf56157419c9aeb94ce65174 SHA-1: 370da75ee3ce4428efc8206a04d908ba77e658e8 SHA-256: 48f6a982d1699fdc8b2d9a6d544174e11e19ab3d50915b1b27284a31e0260afe
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that mimics a download button for Adobe Acrobat Reader. This link redirects to a known malicious redirector (ttraff.com), which is designed to lure users into clicking further. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting an attempt to create a link farm for SEO poisoning or to host further malicious content.

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=adobe+acrobat+pdf+reader+for+windows+10+free+download
    • http://files.davidhallwoodworking.net/uploads/1/3/0/7/130739923/0681375f.pdf
    • http://files.qwerkzfudge.com/uploads/1/3/0/7/130739099/dd60001.pdf
    • http://files.kababgrill3.com/uploads/1/3/1/4/131408581/tixazibojibamug-minaburil-tewomonaniw-pujubidegox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tulajemo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/81992458883.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/fijolodesugatom.pdf
    • https://cdn.shopify.com/s/files/1/0434/5993/6421/files/xorelibodosobex.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/zerarit.pdf
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/81361973977.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/xuxuxefafajamora.pdf
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/37771797557.pdf
    • https://cdn.shopify.com/s/files/1/0430/4896/0151/files/mexodov.pdf
    • https://cdn.shopify.com/s/files/1/0437/1516/6357/files/activate_microsoft_office_2010.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/leruzebawegaluvegimegava.pdf
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/gulotimu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/raponapa.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/93562259793.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_off0000665f.bin
213936f525cf571258c902ee15f1fbd32af1c4591ef934f9a0c933f32ebe0127
pdf-font-stream PDF embedded font (sfnt) at offset 0x665F 5352 bytes
font_01_sfnt_off000078ad.bin
2116588dc8a4534fa9869ba22353c70c16a25470acb29bca64df41e98c32d3b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x78AD 10268 bytes
font_02_sfnt_off00009bda.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDA 4324 bytes