Malicious PDF — malware analysis report

Static analysis result for SHA-256 366c66d7fb1fb5f6…

MALICIOUS

PDF

52.7 KB Created: 2020-08-25 03:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90e1f75b4508231bfacbf010d9250e59 SHA-1: fff58b3b2aeb303ffaaf86d9b591fe8b61449bae SHA-256: 366c66d7fb1fb5f65f55b37ab6fe7008fb542bc3719600c864f6a8da1ca5d66f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is ttraff.ru, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF files hosted on Shopify. This suggests a link farm or redirection attack designed to lead users to malicious 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.ru/pify?keyword=manual+usuario+baojie+bj+218
    • http://files.sabasphotography.com/uploads/1/3/0/8/130873794/xuritudu.pdf
    • http://rivivufu.friendsofstlaurencechorley.org/uploads/1/3/2/7/132740285/9db7b0d5652b.pdf
    • http://tupevari.mylesateliersdenine.com/uploads/1/3/1/0/131070487/81f8235c56f05.pdf
    • http://vugobefa.smarttouchskin.solutions/uploads/1/3/1/0/131070109/8273908.pdf
    • https://cdn.shopify.com/s/files/1/0432/3419/7666/files/laxokokupusanowevida.pdf
    • https://cdn.shopify.com/s/files/1/0435/1305/3343/files/arcgis_network_dataset.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/disogelabexumuzexo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/23998892967.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/approaches_to_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2392/files/easy_disney_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/7967/9646/files/96891237832.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4722/files/zefevo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9010/7815/files/15717707133.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/dewafixabavujuraderada.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/formao_da_atmosfera_terrestre.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/bovoviwovebibi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6062/4549/files/rasofutuduj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2620/3302/files/wewuxewijepolibidepanuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/62568138989.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_off00005d4b.bin
f10e6a8c909a38f1fdaa1709ef4d42dffdd612f987edd83d7e797aced4d7d306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4B 2948 bytes
font_01_sfnt_off000067c9.bin
c735c501d0ca3a2ed6f2eb7c8e34db4416ceac00d166c86a2becc54e1dac77d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67C9 5276 bytes
font_02_sfnt_off000079d3.bin
2558a6720854a944ff787c3da584ce68386226d37dce4e1d6f7f3ee19c5fa6ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79D3 17480 bytes
font_03_sfnt_off0000affc.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFC 16164 bytes

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