Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb20cded26ef6d6c…

MALICIOUS

PDF

41.3 KB Created: 2020-09-09 06:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 460b0b5384053f8bc4d6b96d41268f7b SHA-1: 46604252ab4be6bfdac717d05bf609dc04efd808 SHA-256: fb20cded26ef6d6ca31f045bba57155d8d71ece92540c7aaff4dc857bde374b1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.club'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains a URL similar to the one identified by the redirector heuristic, suggesting a lure to a malicious site. No scripts were extracted, but the presence of multiple malicious or suspicious links indicates a likely attempt to redirect users to a harmful destination.

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.club/wix?keyword=online+photo+editor++for+android
    • https://static.usrfiles.com/ugd/77eba6_3ee020c788814698853356511ce41b5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_6938b56e0ada4c10b1e4f861b6c83288.pdf
    • https://static.usrfiles.com/ugd/b8c837_efc6fe953ec6424396a962789aae88c5.pdf
    • https://static.usrfiles.com/ugd/8e1900_c8c6ccdc98f54f3cbeece7ea360cfb0f.pdf
    • https://static.usrfiles.com/ugd/b972d5_eef55f26625e47b0826314f8aff6d063.pdf
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/neverwinter_nights_walkthrought.pdf
    • https://cdn.shopify.com/s/files/1/0461/8236/7386/files/87383808179.pdf
    • https://cdn.shopify.com/s/files/1/0452/4756/1890/files/arachis_hypogaea_medicinal_uses.pdf
    • https://cdn.shopify.com/s/files/1/0449/7879/8750/files/brachioradialis_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/keto_diet_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/29598519518.pdf
    • https://cdn.shopify.com/s/files/1/0429/5150/8131/files/zabazekidafarilot.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/article_35a.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4312/files/zesekuvokibufogijel.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/69831374404.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_off0000646a.bin
a9eccbd22f7a448cb5205e0f444f709d16c5e814e949ee89f5a2841869a22e04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 4976 bytes
font_01_sfnt_off00007548.bin
5ce7d50a2bacfc514ed6e31ac690a9f48e1cff0479aca60de25873a0074c4fd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7548 10364 bytes

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