Malicious PDF — malware analysis report

Static analysis result for SHA-256 517eed44f4bed7af…

MALICIOUS

PDF

40.0 KB Created: 2020-08-16 12:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6954a10b0cdb0cd76e1fb6a518e86921 SHA-1: 251033e5bcf1c99256fc4234c7347298b17a0b4e SHA-256: 517eed44f4bed7affb0ac96828f5d9bae8b4fd527bc1ea2acf50053504b0f3ea
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'three phase wiring diagram pdf' and includes the malicious URL, suggesting a lure. The presence of a large number of external PDF links also indicates a potential SEO link farm or a method to distribute malicious content.

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=three%20phase%20wiring%20diagram%20pdf
    • http://files.eyretonponyclub.com/uploads/1/3/0/9/130969153/7674e0e5b687.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/online_converter_to_word_free_download_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0432/7702/5446/files/eenadu_epaper_today_telangana_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4864/8354/files/bevepebolekowe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/39329955005.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/cercanias_barcelona.pdf
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/ripinapejokozete.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2231/files/ratuvuwemakibewuranisezod.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/teral.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/xikud.pdf
    • https://cdn.shopify.com/s/files/1/0436/4563/2665/files/ejercicios_categorias_gramaticales_2o_eso.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/lego_hogwarts_castle_instructions.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_off00006042.bin
0845f64694f5609249fd310ce4a0940bcd06a4ddeddee8783b2505323ba908f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6042 5464 bytes
font_01_sfnt_off000072b9.bin
bb76b28bd2de327b071f69313e14e41d8da4794a45abcaed12fd33889c65f439		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B9 9692 bytes

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