Malicious PDF — malware analysis report

Static analysis result for SHA-256 4477e843fcea909f…

MALICIOUS

PDF

35.6 KB Created: 2020-08-20 04:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5da008116c593887183de6bf3c5f2b50 SHA-1: 8cfa3526ccb7db359e7207f7b8b35ab23193c873 SHA-256: 4477e843fcea909fc971410370cd74f494b494446e729eac711521a154d072a4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting an SEO link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body contains obfuscated text and URLs, further supporting the malicious intent.

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=burning+candle+gif+free
    • http://files.carrwriter.com/uploads/1/3/0/7/130739648/dobefitujifilor_kufenodo_defuzirixab.pdf
    • http://nulomesa.wolfgangcarstens.com/uploads/1/3/2/6/132680813/jilowofi.pdf
    • http://files.ethiopianrc.org/uploads/1/3/0/7/130776180/dopurowimabutur_nogogabatunuw_gojot.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/after_effects_the_power_of_expression_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/caddo_lake_bream_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/7640/0792/files/printable_august_calendar_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9197/files/luvutemafupevopirajos.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/albumina_funciones.pdf
    • https://cdn.shopify.com/s/files/1/0430/7078/3645/files/saxiwajagotekafulovaripaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/47157960326.pdf
    • https://cdn.shopify.com/s/files/1/0437/4288/8097/files/algebra_1_common_core_pearson_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/1375/7339/files/ziwexovisegebisas.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f85.bin
5b088a5449f511bdf27723b9db1bb6d9ad23ab5dcb1f5fa86a005dc082fefc6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F85 5060 bytes
font_01_sfnt_off000060bd.bin
6250f8ddb0b4681012a1e7394165e39b1b52ab5f1ec379231487796fe3ca5ed8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BD 9740 bytes

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