Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e6113f3be9fc44d…

MALICIOUS

PDF

57.8 KB Created: 2020-08-01 17:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48ccbb6be730bfb565524c5173891de3 SHA-1: 76bad2e8b1ebfc5127550e2f058646d7d542448e SHA-256: 3e6113f3be9fc44dffd72b0d3d636b17477cb7c2f05c9e099090444e07d4737f
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One prominent link, 'https://ttraff.com/pify?keyword=rs3+summoning+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to 'Rs3 summoning guide' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm and a malicious redirector indicates a campaign to drive traffic to potentially harmful 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.com/pify?keyword=rs3+summoning+guide
    • http://files.ezra728.org/uploads/1/3/1/6/131606874/6664519.pdf
    • http://files.courthousechristian.com/uploads/1/3/1/4/131406629/9bb20e45.pdf
    • http://files.ohsing.com/uploads/1/3/1/3/131380612/toxasefanaregeki.pdf
    • https://cdn.shopify.com/s/files/1/0434/0085/5706/files/dijeveboramixiwog.pdf
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/talk_bubble_png.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/jawapawuvogilaxuge.pdf
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/94685179241.pdf
    • https://cdn.shopify.com/s/files/1/0437/8034/1917/files/pogitemixubedido.pdf
    • https://cdn.shopify.com/s/files/1/0435/3759/6575/files/97753109613.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62856854762.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74523611049.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/joaqu_c3_adn_guzm_c3_a1n.pdf
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/dozakiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52299098946.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_off000097c0.bin
d8ba7b950a6bdded01a8b963a9114869c4835367d6ab8456e818fb6fc0fbba77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97C0 4780 bytes
font_01_sfnt_off0000a7e5.bin
b1edeec6c2065830ae9110983dba0dee9aa90a742586b490756db48778cd1a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7E5 10632 bytes
font_02_sfnt_off0000cbf9.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF9 4324 bytes

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