Malicious PDF — malware analysis report

Static analysis result for SHA-256 b888b93d114789e8…

MALICIOUS

PDF

39.9 KB Created: 2020-08-15 00:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51708e9edba0b2ca1f1b55b7acff6a30 SHA-1: adff7e03956edaaf995d4acf3c7f4c63b152a3c7 SHA-256: b888b93d114789e8e6a8eb25aed6549774927a85c069b2bc028a57f2a62c80fd
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links, many of which point to potentially malicious or redirector domains. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL leading to 'ttraff.cc', indicating a redirection to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic confirms the presence of a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a network of linked documents. No scripts were extracted, and the document body is heavily obfuscated.

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=types+of+non+renewable+energy+sources+pdf
    • http://xawuzori.x-btc.com/uploads/1/3/2/8/132815367/nixesefajotamexizob.pdf
    • http://gurowavu.mcclainscustomsilks.com/uploads/1/3/1/3/131398440/gasidixobigabujev.pdf
    • https://cdn.shopify.com/s/files/1/0435/4827/8935/files/dewipixutuvorexodini.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3267/files/tafemezuzedosuwewe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/bangalore_city_map_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/pokesimevajazudusog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wupukibasabozuxijixosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/fevupevabupesogiseto.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/67359066095.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/57327311357.pdf
    • https://cdn.shopify.com/s/files/1/0439/2845/3288/files/96240221702.pdf
    • https://cdn.shopify.com/s/files/1/0432/4209/4755/files/losodixugusarivezafikax.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7017/files/16955460749.pdf
    • https://cdn.shopify.com/s/files/1/0432/2400/6820/files/3918342842.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_off00005dda.bin
ef0c9628997ca5e4ad137ecdcd49302cbe356185ca9305294fd8394047c91a19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDA 5608 bytes
font_01_sfnt_off0000710d.bin
7882c8ac7cc741cefb435f34529921b1523b9d86ab21481e392e8abc67f70eb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710D 9788 bytes

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