Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad22727c13e03af…

MALICIOUS

PDF

44.7 KB Created: 2020-08-28 03:52:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf8c594c9f86e40dac442784a430578f SHA-1: ae22edfca510ec641eb99849617801c17ba95225 SHA-256: bad22727c13e03af5e068b90618cb53e8321b7d28fa0f795eb1f1cfc665da5cf
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure related to a 'Lyft driver account deactivated' and embeds multiple links. One of these links, 'https://ttraff.ru/pify?keyword=lyft+driver+account+deactivated', is identified as a malicious redirector. The presence of a link farm and the ML classifier's high confidence score further support the malicious nature of this document, which is designed to redirect users to harmful content.

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=lyft+driver+account+deactivated
    • http://doboxoton.journeytosimplicity.org/uploads/1/3/0/7/130775940/3065468.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/sulazulo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4158/5314/files/theories_of_absolute_advantage_and_comparative_advantage.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5045/files/vugimenakijusa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3886/5570/files/malaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/cebuano_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0429/3066/7673/files/gupoki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5568/files/86093532294.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/54698430905.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/gixoxoxutagegorovu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/9613056304.pdf
    • https://cdn.shopify.com/s/files/1/0436/8619/9461/files/auf_kindle_lesen.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_off0000646b.bin
685d46efa1d57782e05a9cf2b35d6f2b9b9a834c242cfd252b57bac50cd21635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646B 3604 bytes
font_01_sfnt_off00007148.bin
aff711e5c3aa60612a91ed0e296c43c0ba3234009e6351c2bd559d579ffc6ed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7148 4908 bytes
font_02_sfnt_off0000820f.bin
83a751326060255b9d807675fd5962d5793dc87aa27307cb9dad9b77817e7864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x820F 10444 bytes

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