Malicious PDF — malware analysis report

Static analysis result for SHA-256 332c220f5dcc39ff…

MALICIOUS

PDF

42.3 KB Created: 2020-08-10 01:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9058b6b18def20fa35a146d67c3a10e9 SHA-1: 3075aa29d36b305d35dccaaa7f56899040ded460 SHA-256: 332c220f5dcc39ffe069678be530bc4a8ef623dc014df306365c7248c7ba1d98
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious content, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.cc/pify?keyword=wild+animals+pictures+with+names+in+english+pdf, which is likely part of a SEO poisoning or link farm attack. The document body, though heavily obfuscated, contains references to the same malicious URL and numerous other benign-looking PDF links, consistent with a link farm strategy.

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/pify?keyword=wild+animals+pictures+with+names+in+english+pdf
    • http://files.deborahmauldinlicsw.com/uploads/1/3/2/6/132680813/4251acbba.pdf
    • http://files.julianoshea.com/uploads/1/3/1/4/131453807/jibumojexoje.pdf
    • http://files.austintxhandyman.com/uploads/1/3/1/3/131383838/4499012.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/rokibixiwipipimiba.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6071/files/minecraft_guns_texture_packs.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2067/files/wordly_wise_3000_book_5_lesson_6.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/65958096421.pdf
    • https://cdn.shopify.com/s/files/1/0440/8927/8616/files/git_deploy_to_server.pdf
    • https://cdn.shopify.com/s/files/1/0431/0247/0306/files/94809603516.pdf
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/manual_boss_gt1_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/46080818435.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/arduino_bluetooth_module_hc_05.pdf
    • https://cdn.shopify.com/s/files/1/0447/2917/2122/files/oxford_discover_grammar_2_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/design_patterns_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/48906375174.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_off000065d4.bin
b08bdd80efb807a83ebcc59a6595cc764657d7080ffad9490e59767756363c91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D4 5676 bytes
font_01_sfnt_off00007914.bin
da132abb4d1d1118c5ad2cc3f104bd57eb905171b90df6bcd6250f2b9717fa76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7914 10288 bytes

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