Malicious PDF — malware analysis report

Static analysis result for SHA-256 b433aa34c6ebed02…

MALICIOUS

PDF

72.7 KB Created: 2020-08-15 21:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 479f5a44f82981a3f8c61e0cc0c6ed8d SHA-1: e734e17979ae7b4290d49ac039883b71ac3611a5 SHA-256: b433aa34c6ebed029b9cb20c12ba0d3962d7507e5544261f1e423016ed54e712
120 Risk Score

Malware Insights

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

The PDF contains embedded links, with one critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to lottery results and a URL that matches the malicious redirector. The presence of multiple links to external PDFs, many hosted on cdn.shopify.com, suggests a link farm or content distribution strategy. No scripts were extracted from this sample.

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/wb?keyword=today%20nagaland%20state%20lottery%20result%20pdf
    • http://files.dippedindope.com/uploads/1/3/1/3/131379894/gugomuwurotux-bakafati-pedef-tivewexewuxa.pdf
    • http://files.aliconway.co.uk/uploads/1/3/1/6/131637021/susegi.pdf
    • http://files.chasenigleheart.com/uploads/1/3/1/4/131482999/jezipen.pdf
    • http://files.madeleinemacmahon.com/uploads/1/3/1/4/131453496/xonuwimebotirowo.pdf
    • http://rozolus.sacredsalontahoe.com/uploads/1/3/2/8/132814930/c1afec0235.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/wijukimozefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5637/files/vivagebexugosideg.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/90941724945.pdf
    • https://cdn.shopify.com/s/files/1/0429/8273/6031/files/spanish_english_cognates_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/3598/9928/files/13541443371.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/61238628400.pdf
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/definition_of_volcanic_eruption.pdf
    • https://cdn.shopify.com/s/files/1/0430/3385/4103/files/gikazugigesujezu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/papofisonemixajewejavidu.pdf
    • https://cdn.shopify.com/s/files/1/0451/3749/4169/files/pasar_un_archivo_a_word_sin_programas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ximulomonarosaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0219/9203/files/tax_incentives.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b062.bin
ffe0fa465ffa4680cf4866c780aad262d2c6328536290b8922e6ec805daa7905		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB062 5260 bytes
font_01_sfnt_off0000c260.bin
39a0771403d3dcba32f97a8d06101b4ff55fb54b19d1b06f79b915501130809b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC260 4896 bytes
font_02_sfnt_off0000d219.bin
1be78fc07f6c53078a5dbae408ce258648bd6acb9c688661dd2940a4d971a9ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD219 12660 bytes
font_03_sfnt_off0000fa88.bin
56265da6960590936927e8895ab155c8109cf6bc487d09cb22d2448045b8d589		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA88 8028 bytes

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