Malicious PDF — malware analysis report

Static analysis result for SHA-256 394354e531f3b4b2…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 21:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65b72e13dd2de1da68f5e9c80a6da7c0 SHA-1: 02e728b231a5b063705b8435505f7521a3731a5b SHA-256: 394354e531f3b4b2cfb353a9a3946c39881052fe2e49b57591624ac27d97c6b2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF document contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link redirects to known malicious infrastructure at ttraff.cc. This suggests a link farm or SEO poisoning technique used to distribute malicious content. The document body, though heavily obfuscated, contains the target URL, indicating an attempt to lure users to click through to a potentially 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.cc/wb?keyword=ethiopia%20disaster%20risk%20management%20policy%20pdf
    • http://files.appleseedjunction.com/uploads/1/3/1/0/131070712/kuwutusafitojugono.pdf
    • https://cdn.shopify.com/s/files/1/0428/9059/2422/files/medica_member_login.pdf
    • https://cdn.shopify.com/s/files/1/0430/6839/1591/files/tavitagevufenoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0661/files/bbg_weeks_13-_24.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/27175554354.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1929/files/77189209091.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/babeturinivorobimazuzaf.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/36963815659.pdf
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/bokuwegurapetixe.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/kinubujatebumusagipigexa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8100/6246/files/comment_couper_un_en_plusieurs.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/50419821330.pdf
    • https://cdn.shopify.com/s/files/1/0433/3522/1403/files/46527301096.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_off00005efd.bin
7399c1631665d7a9c01232b48809dded474786d5743f0a0eb566d5897cfb9da5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFD 5692 bytes
font_01_sfnt_off00007241.bin
d22f9f75e13312ca1bf7c686f412326dfe59e849969eb8cde84cc77e44f7a8e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7241 10348 bytes

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