Malicious PDF — malware analysis report

Static analysis result for SHA-256 d43f0ed8f8a92c0c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-25 01:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e30b214afa2ae95b6798dee4bb8cda2 SHA-1: 1a890149fc9cc3c0f35d9c52f33ac59d74fd7845 SHA-256: d43f0ed8f8a92c0c1bc6054438feb7049e2429b20e90496f911a76c983a94e4e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with the first being to 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same redirector URL and a reference to a Shopify PDF, suggesting a lure to a malicious site disguised as a document download.

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=harry+potter+theme+tune+flute+sheet
    • http://kazijigoj.caitlingreenho.com/uploads/1/3/1/4/131453945/2823729.pdf
    • http://nibogaker.blaisebaptist.org/uploads/1/3/0/7/130775734/5486309.pdf
    • http://nujesuki.stpaulscollingswood.com/uploads/1/3/0/8/130874493/tafokaxuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/breast_cancer_articles_2019.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/xcw_wrestling_porn.pdf
    • https://cdn.shopify.com/s/files/1/0434/0793/3603/files/51027341432.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/sivemabitikirefoxuzod.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/26352902370.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/9470835473.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugos.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/43851066863.pdf
    • https://cdn.shopify.com/s/files/1/0428/7817/3343/files/rixaf.pdf
    • https://cdn.shopify.com/s/files/1/0447/5407/5799/files/97215119071.pdf
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/dutobanidivirode.pdf
    • https://cdn.shopify.com/s/files/1/0435/0941/6095/files/set_a_timer_for_13_minutes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jatud.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_off00006990.bin
453200b7f5a34429eaab5c0987eb473d95ed03e9aef73e369b1c4d77cb91dde2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6990 5204 bytes
font_01_sfnt_off00007b29.bin
407bdeaea279d86abd7852f5e6e32b35d2ac8286ae74222dbdc751e6f0981f61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B29 10804 bytes

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