Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c851d0b40baca4…

MALICIOUS

PDF

44.6 KB Created: 2020-08-10 09:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f605514175188a389a1d3315fa71d61 SHA-1: f310f1f2552de1b3d6f46c77ec1f2dd5ef9d31a8 SHA-256: c6c851d0b40baca4e39f92afb057273530fe3c86348345c47247215bd1042ff4
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 a redirector service. The primary heuristic indicates a malicious redirector link, suggesting the document's purpose is to direct users to harmful content. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, indicating a lure to a potentially malicious site.

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=cristianismo+puro+e+simples+download+pdf
    • http://files.triangleyouthballet.org/uploads/1/3/1/8/131856877/napigajulig.pdf
    • http://sozepa.zicklinfaa.com/uploads/1/3/1/3/131383664/jowop.pdf
    • http://nukowon.alexsarkisian.com/uploads/1/3/1/6/131606727/fesigakeluje.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/ilustracion_cientifica_botanica.pdf
    • https://cdn.shopify.com/s/files/1/0428/3216/7068/files/12698196573.pdf
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/mijubafafifeserovarol.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/jinob.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/17052855064.pdf
    • https://cdn.shopify.com/s/files/1/0437/8250/4600/files/spoken_english_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0766/files/goniferunonako.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/30996924592.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/12787783906.pdf
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/90197625268.pdf
    • https://cdn.shopify.com/s/files/1/0438/0327/9517/files/29827224769.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_off00005c40.bin
a32bc3ed6deed8184f5cdb16ce219d346018f8883c5fd452b32e91e0d0398401		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C40 5184 bytes
font_01_sfnt_off00006dd7.bin
fda63367318d76abe2c813752c26c39b0e5b6aff393c6ba3658baba8906c378d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD7 10120 bytes
font_02_sfnt_off000090a8.bin
3a0f8ed008c79ef5fc1e40fbe805bb4ed86c3b537cef76351acb51b29d81aea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90A8 16080 bytes

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