Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb48d7cd13d9e0f6…

MALICIOUS

PDF

64.3 KB Created: 2020-08-19 20:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b39dfc1d4ea4d53b33b14b7b3c0db386 SHA-1: 3dc0ea02dcb7e14930955ec902db62001f0c86f2 SHA-256: bb48d7cd13d9e0f689be0a2a0224be08cc6916621b5c0c6f18d927dd045b2820
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=thesis+format+chapter+1+tagalog'. The document body, though heavily obfuscated, contains references to thesis formatting and the URL that triggered the malicious redirector heuristic. This suggests a social engineering lure to drive traffic to malicious infrastructure.

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=thesis+format+chapter+1+tagalog
    • http://jizokoni.jpknightsmovie.com/uploads/1/3/0/9/130969808/xosapalemajelu.pdf
    • http://dedoradi.hannah-ayers.com/uploads/1/3/2/6/132683286/vabawenug-sixubunator-vanibogakopezar.pdf
    • http://zeziwizor.benglen.org/uploads/1/3/0/7/130775111/5871447.pdf
    • http://files.five4him.com/uploads/1/3/2/7/132740435/8763100.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/20477383874.pdf
    • https://cdn.shopify.com/s/files/1/0433/2768/4760/files/67721608229.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/12872604741.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/93661951687.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/gexubakabol.pdf
    • https://cdn.shopify.com/s/files/1/0432/7640/2854/files/zuxiramomefugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mirogorozizodixomalejog.pdf
    • https://cdn.shopify.com/s/files/1/0436/0437/7763/files/najez.pdf
    • https://cdn.shopify.com/s/files/1/0433/3145/3081/files/27318381044.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/wosigojobovevonaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/jogos_para_psp_gold.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/ragenevu.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_off0000b195.bin
a541a694bc6ed8c2b67e3fc1e71700eab8af1ebaa62f5ac2f86435a9e100410a
pdf-font-stream PDF embedded font (sfnt) at offset 0xB195 5112 bytes
font_01_sfnt_off0000c301.bin
b1f116356eaee39ad226e8cf9c93f624c4f9db1abecef9900d72eed132422c56
pdf-font-stream PDF embedded font (sfnt) at offset 0xC301 10584 bytes
font_02_sfnt_off0000e667.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE667 4324 bytes