Malicious PDF — malware analysis report

Static analysis result for SHA-256 e111d84fcda3e0a5…

MALICIOUS

PDF

48.6 KB Created: 2020-08-03 03:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 952a127b886b55bd0dffaa6b6178acd4 SHA-1: 76ac1f3f297cb52ae7beca58df00233d010ff611 SHA-256: e111d84fcda3e0a52f9057306c937f37730996d7e2b3a14194956dfb3e1d0f93
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, masquerading as a search result for a specific textbook. This is further supported by heuristics indicating a malicious redirector link and a PDF link farm. The embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites.

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=silberberg+chemistry+7th+edition+pdf+download
    • http://files.headoverboards.net/uploads/1/3/0/9/130969357/3600127.pdf
    • http://files.debbieandriullidesigns.com/uploads/1/3/1/3/131379266/seninowule.pdf
    • http://files.thomasvasasphotography.shop/uploads/1/3/1/8/131871642/7437f41.pdf
    • http://files.mnwelcomehomevets.org/uploads/1/3/2/3/132302780/ce07a1bbe7.pdf
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/zarivuxulaxodafuna.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/gakovomik.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/fogis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/pogawizudipotiriton.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/1-_99_fletching_guide_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6063/files/24900072106.pdf
    • https://cdn.shopify.com/s/files/1/0433/7097/1299/files/lotixaxotapofuwimesoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9616/files/sifuponunadizesopi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4909/files/wigutaxowexiferiwej.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/napabef.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_off000079e3.bin
9f9b8b22865b02f9aef246037cba774488fec8d85de55dfe75a009a9bf6e78a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E3 6084 bytes
font_01_sfnt_off00008e88.bin
fa4d1530584b0b3a323a995f8a8dcffe8870fd2a4e90380475a0cee7bfac9c12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E88 11608 bytes

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