Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bd9702bbd7d87b…

MALICIOUS

PDF

41.1 KB Created: 2020-08-26 19:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e18b495a662a7bad23cd7519986c531 SHA-1: 3bbbeb48348253116ea3e747dfcea6ac81a3b927 SHA-256: 20bd9702bbd7d87be1db50d88b3f05011c0e92bf973ce52867ce571d29943457
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=nejma+nayyirah+waheed'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body is heavily obfuscated but contains the same redirector URL and several Shopify URLs. The primary intent appears to be directing users to malicious content via the redirector.

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.me/pify?keyword=nejma+nayyirah+waheed
    • http://zegefite.chhspiratesband.org/uploads/1/3/0/7/130738993/4548304.pdf
    • http://bojawiz.wvcls.org/uploads/1/3/1/4/131408027/disekok-ratup.pdf
    • https://cdn.shopify.com/s/files/1/0435/7485/3793/files/89704948822.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/46435830183.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/ximosalusafivip.pdf
    • https://cdn.shopify.com/s/files/1/0428/3272/4124/files/39923068749.pdf
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/4374468573.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/semizipina.pdf
    • https://cdn.shopify.com/s/files/1/0437/8702/6590/files/play_shopping_city_game.pdf
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/25429427107.pdf
    • https://cdn.shopify.com/s/files/1/0437/5897/7178/files/29447415882.pdf
    • https://cdn.shopify.com/s/files/1/0437/0258/3449/files/bejozarakawoburijezubo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1626/4616/files/nazatupirubevokosewik.pdf
    • https://cdn.shopify.com/s/files/1/0445/1385/3599/files/bevars_telugu_movie_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9517/files/alexander_the_great_full_movie_free.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_off000063e5.bin
231da33afb33ce2fe1dbf5f99390bc9fe0d8521eef1b06e08aa21cd9837ac8e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E5 5096 bytes
font_01_sfnt_off00007522.bin
847cac9077a262a515ec4b8bd93d4b4cd354e44b62f2b4a4768435915f3d27ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7522 10024 bytes

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