Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f17c69d3b533f6…

MALICIOUS

PDF

46.7 KB Created: 2020-07-31 02:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c2cf2a6e0766537f7f5df7304535f4d SHA-1: 2d5781ccf676d0d605b57238f56eb1cf7f0e991f SHA-256: c8f17c69d3b533f6a74f937d5391d669e368b61fa88aab06fb250dcf6699fa5a
128 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to numerous PDF files, with one primary link identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to corporate reports or invoices. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating a phishing or social engineering attempt. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=illinois+corporate+annual+report+form+pdf
    • http://files.heanyoutloud.com/uploads/1/3/2/6/132683168/towebikige_xizokegiv_juzilewigifudoj_vigaxumamog.pdf
    • http://files.badass-beautyenvy.com/uploads/1/3/1/3/131380467/7fedb7c429b.pdf
    • http://files.antikapictureframing.co.uk/uploads/1/3/1/3/131398046/9b996.pdf
    • http://files.yogascapesinjapan.com/uploads/1/3/1/1/131164275/8473436.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/37359688451.pdf
    • https://cdn.shopify.com/s/files/1/0432/9822/6329/files/11756813835.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/zakuduvuwatedogun.pdf
    • https://cdn.shopify.com/s/files/1/0429/6038/8259/files/30074201066.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/16724736325.pdf
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/tariwufaxiduduguxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/binilomunegaroxipido.pdf
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/pikezuvaxal.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/nomujesajosubuwerurag.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/xigobezosafajatuf.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_off000077f9.bin
92afc37e30f88005b2989fbd86e21d4fd3b19ec684df45417e8575ac65da4efe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F9 5120 bytes
font_01_sfnt_off0000893c.bin
a15eade1f1a8045fd360192064442b4e9216365ab19d4fdb8d8d8b154b87ac20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x893C 10560 bytes

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