Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c4602746c0e3ff…

MALICIOUS

PDF

35.1 KB Created: 2020-08-06 23:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 895a4736a3820d09fdca67c0440a64f1 SHA-1: cbfccbd93adc548a3c341963f5ad2365f741b471 SHA-256: e9c4602746c0e3ff532ec801ed9fe32caceb0517aaf006cb04cd1ee8c67a05e1
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including a critical redirector link to 'ttraff.cc', which is identified as malicious. It also exhibits characteristics of a PDF SEO link farm, attempting to disguise itself as a search result for educational content to lure users to potentially harmful sites. The document body, though heavily obfuscated, contains the target search query and the malicious redirector URL, reinforcing the lure.

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=addison+wesley+math+makes+sense+3+pdf
    • http://vobamajaw.deanheatingandcooling.com/uploads/1/3/0/9/130969426/lonefexeler.pdf
    • http://files.phjarchitects.com/uploads/1/3/1/4/131414134/eb0382512fec.pdf
    • http://files.deltabassclub.com/uploads/1/3/1/4/131438784/mubim.pdf
    • http://files.nelsonscience.org/uploads/1/3/0/8/130813757/fizibafir-selonekeposu-gajaxapo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/fipewedagasupena.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdf
    • https://cdn.shopify.com/s/files/1/0437/4901/5713/files/zibibizuxuxibore.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83142526711.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/sobir.pdf
    • https://cdn.shopify.com/s/files/1/0441/1123/3176/files/pdf_to_word_apple_store.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/genefilevukibusigu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/23278113544.pdf
    • https://cdn.shopify.com/s/files/1/0436/1519/1202/files/debekuxamefarunarezisebut.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47171602999.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/fadomuwofa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.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_off00004951.bin
5d342c4f08630e4c7bff6c7db9b43018cb185deee48750a629ecc79a96b9ca54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4951 5596 bytes
font_01_sfnt_off00005c4b.bin
25d047ef937721d447c868e723548325ac4574db3fbda983cc253973c39af5e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4B 9840 bytes

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