Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6fd7b6505aaa39…

MALICIOUS

PDF

41.3 KB Created: 2020-08-25 23:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e8edee9e57507d00c207b9c7c73ebe5 SHA-1: 12e47e8adec7cbcfba872f38d92f88aeab1e994f SHA-256: 7e6fd7b6505aaa3977c45dd69995afd5f8342caf835a028c9db35e8f350ca899
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to lure users into clicking on malicious redirectors. The primary malicious link, 'https://ttraff.cc/pify?keyword=building+code+requirements+for+mason', is a critical finding, indicating a redirection to potentially harmful content. The document body, though heavily obfuscated, contains references to the same lure text, reinforcing the social engineering aspect. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm strategy to obscure the ultimate 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/pify?keyword=building+code+requirements+for+mason
    • http://files.thechurchinindianapolis.net/uploads/1/3/1/0/131070520/kobenige_jujonotag_mijenazumeno_jowun.pdf
    • http://files.openingnightcostumes.com/uploads/1/3/0/7/130775921/nosiwonofiwawum.pdf
    • http://files.peachstatediesel.com/uploads/1/3/1/4/131453651/8140733.pdf
    • http://files.annaesdre.com/uploads/1/3/1/0/131071145/zumuduzenobuzanake.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8074/files/giberujazefosadadim.pdf
    • https://cdn.shopify.com/s/files/1/0461/9026/4469/files/xaris.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/8942037192.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1416/files/99322772480.pdf
    • https://cdn.shopify.com/s/files/1/0448/3658/5629/files/url_html_to.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/lights_on_yoga_sri_aurobindo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/70395215073.pdf
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/jadigolilakorom.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_off000062b0.bin
d59dec08dc4e4e26b163dc92e7784a85d0c3e9817f5b4f619a6dda79c4232f4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B0 5516 bytes
font_01_sfnt_off0000754b.bin
1e83d0490466399961ff298a118d0fe30efafe4ec3f85c8e5a593017a4afc7fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754B 10376 bytes

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