Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63a109739c142f9…

MALICIOUS

PDF

57.1 KB Created: 2020-07-26 14:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab4e772f7fd6975ae217f6baa107f28f SHA-1: b69ddfbd93f472d74a2d1e5fe15dfc29728c16c5 SHA-256: a63a109739c142f92b8e821e634d6c87d804509cb4d5bdf7835eab916c2f5b62
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a product manual. This indicates a phishing or scam attempt. The PDF also contains a large number of external links, suggesting it's part of a link farm designed to manipulate search engine results or distribute malicious content. No scripts were extracted, but the primary malicious activity is the redirection to a potentially harmful URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=braun+series+7+7899cc+manual
    • http://files.corbettdc.com/uploads/1/3/1/3/131379789/xoxurew-fuloxelukimur.pdf
    • http://files.devereuxbarns.com/uploads/1/3/1/4/131454158/zarubomifovufogara.pdf
    • http://files.utsaaed.com/uploads/1/3/1/0/131070912/babixiwopapakemixir.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/82931246283.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/xilemumekudigawisi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/64142838226.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/zumijiluz.pdf
    • https://cdn.shopify.com/s/files/1/0435/6970/9217/files/jepodiwiragixulibop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/towazowefololazeboritek.pdf
    • https://cdn.shopify.com/s/files/1/0432/9573/5963/files/japifowazanofebokilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/wajemoxib.pdf
    • https://cdn.shopify.com/s/files/1/0435/8314/4104/files/fiminaroda.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/5509863938.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/zibolijulotinagatumudone.pdf
    • https://cdn.shopify.com/s/files/1/0437/9348/1885/files/40706024278.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bb3.bin
d701da98d474a73790ef67086b880a1ce25008a546b4099607a93795f0cd2d66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB3 5116 bytes
font_01_sfnt_off0000acef.bin
47ccc0879f9a9eac2b105979cb0b031f9692eb7c7bd3fa7f312f641c28a4e20d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACEF 13420 bytes

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