Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f488643bd199962…

MALICIOUS

PDF

41.8 KB Created: 2020-08-14 04:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7353f9f55160fa9d1a026b114b924e71 SHA-1: 3c1a872a61712f27fc4c66c00e2a7fc792f8b8ba SHA-256: 3f488643bd199962c79581f383a4410d5d31014ab898fd2db4c848b0d767ba18
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=natasha+bedingfield+unwritten+song'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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/pify?keyword=natasha+bedingfield+unwritten+song
    • http://dozafa.starzsalon.com/uploads/1/3/1/4/131407406/nutiresuwenevosi.pdf
    • http://files.nuancetravelacademy.com/uploads/1/3/1/8/131856232/vezilidozakatuw-kanajux-nafimevinezafuz-nufagurabavik.pdf
    • http://xilotikes.thedougmargroup.com/uploads/1/3/0/7/130776021/tiwipozidamusuzotala.pdf
    • https://cdn.shopify.com/s/files/1/0435/2013/1236/files/bozebibipej.pdf
    • https://cdn.shopify.com/s/files/1/0437/4613/2119/files/tabubobilopakewodudadup.pdf
    • https://cdn.shopify.com/s/files/1/0428/1060/5735/files/101_reading_test_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/7166/7352/files/tozezusomilibodab.pdf
    • https://cdn.shopify.com/s/files/1/0434/6583/4649/files/minecraft_ps3_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6904/files/80243502606.pdf
    • https://cdn.shopify.com/s/files/1/0434/9050/8960/files/65033545587.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/30066243116.pdf
    • https://cdn.shopify.com/s/files/1/0440/9131/0232/files/facebook_notification_sound.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/practicing_chromatic_guitar_scales.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_off00006532.bin
26eab419313706825c397fd3ef212b421b658fcd02109efff0af6af08af7662e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 5372 bytes
font_01_sfnt_off00007775.bin
7a76543ddb0a771ada5f9374631b9f88bd614196087410521818983347ce3066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7775 10760 bytes

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