Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b705ad670af1f35…

MALICIOUS

PDF

57.9 KB Created: 2020-08-25 09:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55faff2e9c12b4038a999452d7ada9b4 SHA-1: 276563a4f84a72457cca121e63e2b4fe8c819d47 SHA-256: 9b705ad670af1f35708a4f5d0317598c961fdd8cbca5e07ec589196ed6af9d14
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector. The document body mentions 'Avg antivirus android gratuit 2018' and includes a URL that redirects to a malicious site. This suggests a social engineering lure to trick users into visiting a potentially harmful website. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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=avg+antivirus+android+gratuit+2018
    • http://tajel.soloperformanceworkshop.org/uploads/1/3/1/4/131453130/3b7d5c.pdf
    • http://files.alaskarvadventures.com/uploads/1/3/1/8/131871518/3e06e8def0b.pdf
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/12752872440.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0374/files/nifivunuxima.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6959/files/wurunaluwunelasewe.pdf
    • https://cdn.shopify.com/s/files/1/0439/2773/2379/files/9457750829.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8991/files/13361635412.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/66037908530.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/bus_ticket_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/kanavijubelomenejijusaku.pdf
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/jajadiwem.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/14449729206.pdf
    • https://cdn.shopify.com/s/files/1/0436/1800/9250/files/96686696981.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/noletepapagazimoki.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_off00009812.bin
f23ccbd6d8ebc7c91276f8801e9c75502c6e81dee5267f61c706f7feb3b1f8f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9812 5296 bytes
font_01_sfnt_off0000aa17.bin
b221adbd040a00c4e051efa1e6f36543ae0e7a7d0de46e4fba81f081d3a2dcf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA17 10028 bytes
font_02_sfnt_off0000cc5c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5C 4324 bytes

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