Malicious PDF — malware analysis report

Static analysis result for SHA-256 31a3822b8e11adf8…

MALICIOUS

PDF

43.5 KB Created: 2020-08-07 23:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 852ebfe34f113eef38f928cdfa5aeaf7 SHA-1: de73f1bb83472962d6a40f93eb252514d3f8f6f5 SHA-256: 31a3822b8e11adf8614c2f20b060b8f77ee2a55796ce3a9c2e937d4f215e6131
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on various domains. One prominent link, 'https://ttraff.com/pify?keyword=hotel+business+plan+in+kenya+pdf', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution.

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=hotel+business+plan+in+kenya+pdf
    • http://files.cardinalbeadcreations.com/uploads/1/3/0/7/130739340/levusumugelogu.pdf
    • http://mogaritul.villageinitiativeinc.com/uploads/1/3/1/4/131438137/2081498.pdf
    • http://files.abigailjacksondesigns.co.uk/uploads/1/3/1/3/131379545/5c96fdb5f9142.pdf
    • http://files.thecarissafoundation.org/uploads/1/3/2/7/132740424/36c20b53a65724f.pdf
    • http://zotixagux.goodatlooking.com/uploads/1/3/1/4/131452922/b1c1017df19d1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/milomivobofuziw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/63413311478.pdf
    • https://cdn.shopify.com/s/files/1/0435/1734/5944/files/3577242426.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/weguwasod.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/lilolimowigekaro.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/52536604217.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/60036540043.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/lolejoxototidon.pdf
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/sexar.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/54103458403.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4679/files/21891115904.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8989/files/773_349_4911.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5632/files/sefimuzi.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_off00006985.bin
e70f2a280b424baf622058371899852fcbe416b0fbe20e5e08de62916c0e1724		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 5204 bytes
font_01_sfnt_off00007b50.bin
f7223282bd5386cbc9cffee4418224492ca12cbd4e972f35c9e515a16ec60932		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B50 10616 bytes

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