Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f3e01f5b4f79b98…

MALICIOUS

PDF

48.1 KB Created: 2020-08-31 17:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff5d38ec5e597326a1cf02b8466cf925 SHA-1: 69b88a2970f415611aebd421556f1c5f1ac67b6d SHA-256: 9f3e01f5b4f79b98fa43c0532e16d2cbe962adc8cbb59156d63fcc226c1872fb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary link, https://ttraff.com/wix?keyword=competencias+actitudinales+pdf, is flagged as a malicious redirector. This suggests the document's purpose is to drive traffic to potentially harmful websites, likely for SEO manipulation or to host further 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.com/wix?keyword=competencias+actitudinales+pdf
    • https://static.usrfiles.com/ugd/b8c837_b291d8e5287540a7a20338fd5a39b0c9.pdf
    • https://static.usrfiles.com/ugd/ab922d_fac73e9e345349098d105a275881dcc6.pdf
    • https://static.usrfiles.com/ugd/b8c837_2aac02ea31b54a6fb1102a0d7b121a3e.pdf
    • https://static.usrfiles.com/ugd/aff7ca_a911626cbed24d7c90d242eadb15d104.pdf
    • https://cdn.shopify.com/s/files/1/0448/4392/5661/files/amharic_protestant_mezmur_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/43656479449.pdf
    • https://static.usrfiles.com/ugd/696b8a_14423a6199c74d67bcca3cbcde056682.pdf
    • https://static.usrfiles.com/ugd/b8c837_233d63fd43384f64a6583dfb153e8502.pdf
    • https://static.usrfiles.com/ugd/b8c837_9efea030c12f4ddcbf79c469a37b49f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_d974b2306f6b4da9a81170ed331ec1c0.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/81248207214.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/the_walking_dead.pdf
    • https://cdn.shopify.com/s/files/1/0452/5555/7282/files/beginner_weightlifting_routine.pdf
    • https://cdn.shopify.com/s/files/1/0431/0437/0842/files/blow_my_mind_instrumental_beat.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_off00006ee3.bin
27cd82d97c09b598080cc523332831b175adc263cd3239e372e08cff5891a251		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE3 5108 bytes
font_01_sfnt_off00008025.bin
53adfb52789247caf916994658c792577d46843e3ab217b9b58fab1db3b7a936		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8025 11336 bytes
font_02_sfnt_off0000a512.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA512 4324 bytes

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