Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c884073f8c8283…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 08:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7198b4c44dff9ba156d1c3ebdb4b7489 SHA-1: 3d433c6984254590fcf2e48b59e7d6c40ce3af3d SHA-256: f7c884073f8c8283139554238147c25622ad33dd2a37dd03beac4d697c587060
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation or to obscure malicious destinations. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.com/pify?keyword=reporter+da+jovem+pan+em+brasilia'. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the attack pattern.

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=reporter+da+jovem+pan+em+brasilia
    • http://files.pst4y.org/uploads/1/3/0/7/130738814/piwagitasesesuwatug.pdf
    • http://dexaw.gregoryscommercialcleaning.net/uploads/1/3/1/3/131398285/2252824.pdf
    • https://cdn.shopify.com/s/files/1/0438/6763/5867/files/dilefopej.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/tipufosawuvedejagiwenewe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/19082162979.pdf
    • https://cdn.shopify.com/s/files/1/0461/9170/6263/files/dreadit_movie_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/up_board_result_2020_class_12_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/xinunabaju.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/88944604968.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/47656512252.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/28029679651.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_off000058f3.bin
fcf11061e21dedbed2cdfc143980119e6e9a6951c179fe76ddb7f9b5e5ed380d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F3 5176 bytes
font_01_sfnt_off00006a7c.bin
00792385804900eef7582b805781ed01921b9447725d0d316d4010c2b5ad7f89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 10228 bytes
font_02_sfnt_off00008d6d.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6D 4324 bytes

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