Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6962b85daa03ee…

MALICIOUS

PDF

50.4 KB Created: 2020-08-29 14:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ec4a8047c9fd207c74a24b1ab2b974b SHA-1: 669c7d707ba04d2dd6fcdec8f26500c290f910c3 SHA-256: 4c6962b85daa03eeb802b4ed497c237ac7c7029b50e7705ec7938c9ff1053d92
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=tri+par+insertion+java'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links hosted on Shopify, suggesting an attempt to obscure malicious activity or distribute content. The document body, though heavily corrupted, contains the malicious URL and references to Shopify PDFs, reinforcing the redirection attempt.

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/wix?keyword=tri+par+insertion+java
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/95064442697.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/arduino_sensors_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/bewifikujalop.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/puzoletur.pdf
    • https://cdn.shopify.com/s/files/1/0432/3616/3747/files/ricoh_bay8controller_hp_elitebook_8540p_driver.pdf
    • https://cdn.shopify.com/s/files/1/0434/9581/7382/files/62534790771.pdf
    • https://cdn.shopify.com/s/files/1/0435/0712/2342/files/73273136865.pdf
    • https://cdn.shopify.com/s/files/1/0433/7244/5854/files/21059289395.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/tetewubaketiwunukononudal.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/bescom_recruitment_2019_notification.pdf
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/43790743459.pdf
    • https://cdn.shopify.com/s/files/1/0431/8068/7524/files/wuvukulejoxarebopojuwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7641/files/56051620460.pdf
    • https://cdn.shopify.com/s/files/1/0430/5407/1957/files/dibivipoguzanom.pdf
    • https://cdn.shopify.com/s/files/1/0436/3055/9390/files/sticker_maker_for_gb_whatsapp_apk.pdf
    • https://cdn.shopify.com/s/files/1/0449/8187/8942/files/tamimenolatag.pdf
    • https://cdn.shopify.com/s/files/1/0434/9794/7300/files/97843058238.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069bc.bin
52aa13fd579c485a7c8e9bc1ff903919f65fb3d1f757ce08c5ea0117ab3b070b
pdf-font-stream PDF embedded font (sfnt) at offset 0x69BC 4868 bytes
font_01_sfnt_off00007a5a.bin
a831bde84ccd8458e67c857c838ac10ce5bc32e4d7123392f01f17f57d51ecc3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 14156 bytes
font_02_sfnt_off0000a754.bin
5e9044b90c439bcb6d8025ff2d734cb9db61b3a1cfec9a433771de312f0a3c02
pdf-font-stream PDF embedded font (sfnt) at offset 0xA754 16084 bytes