Malicious PDF — malware analysis report

Static analysis result for SHA-256 a57cde7b9fd639db…

MALICIOUS

PDF

40.5 KB Created: 2020-08-02 19:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7afe80b973b5027da6f503f399deefc1 SHA-1: 0ebeea04baf2148d4be77cc7bdad5c5c7a182624 SHA-256: a57cde7b9fd639db77b67b6c7ecc7cb45f0ab181e68474da1df3c5570ba6d6b9
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically targeting searches for 'miele induction cooktop operating manual'. The primary malicious URL identified is https://ttraff.cc/wb?keyword=miele%20induction%20cooktop%20operating%20manual. This indicates a social engineering attack aiming to trick users into clicking malicious links under the guise of finding product information. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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/wb?keyword=miele%20induction%20cooktop%20operating%20manual
    • http://files.sarahavalia.com/uploads/1/3/1/0/131070904/d0e9ec7c37.pdf
    • http://files.cajunspleasures.com/uploads/1/3/0/8/130814308/2352734.pdf
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/58708460764.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/book_of_lies.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/csgo_viewmodel_generator.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3485/files/91867361230.pdf
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/xadifu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/82085530446.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8437/files/62137622484.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/7841957940.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1931/files/50596831528.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/10548809775.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/xezexorurovototig.pdf
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/97746382452.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_off00005fc8.bin
2fdde77d40627602ccf057a6953fb328aa9414f0200a9eea5673531623defe8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 5284 bytes
font_01_sfnt_off000071b9.bin
d97cce1b401017c8bb7d01dac6d884dbc28badb0d53e7776bc80048935fe9977		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 10412 bytes

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