Malicious PDF — malware analysis report

Static analysis result for SHA-256 513710c6abb30f12…

MALICIOUS

PDF

43.9 KB Created: 2020-07-28 02:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57f7d40438655a38a979ba08abd5a354 SHA-1: a09aac899853ed2f0d8b7588ebfc786aad38a114 SHA-256: 513710c6abb30f1274dcf442a9e2f8c3e1a05e2b80d5ad6f355cce27c977a360
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains keywords like 'Arduino usb driver windows 7' suggesting a lure. The presence of numerous external links, many pointing to Shopify, indicates a link farm strategy to distribute malicious content or host phishing pages.

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.com/pify?keyword=arduino+usb+driver++windows+7
    • http://files.opendoorskorea.org/uploads/1/3/1/8/131856743/manam.pdf
    • http://files.sgtroofing.com/uploads/1/3/1/6/131606169/e627d.pdf
    • http://files.buy-ephedrine-uk.com/uploads/1/3/1/8/131871921/safasata.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/71005093467.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/34625526458.pdf
    • https://cdn.shopify.com/s/files/1/0431/3848/2337/files/malaterurujamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4690/3709/files/36131462509.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1824/files/vezexabuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12410546401.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2406/files/67603421561.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/naxavewizepegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/pexodowivalofovekozonar.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/42617717559.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/kevunufimoxorogidulupar.pdf
    • https://cdn.shopify.com/s/files/1/0434/1055/5034/files/nodetapixozuzepesake.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/33422869438.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/jemimajonupunotaw.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_off00006fff.bin
3cf231a471f93501ef2c39429b155bb27e9e91b2a5a1bfa5b2dcbc538f6d6b3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFF 4740 bytes
font_01_sfnt_off0000802d.bin
3ea24a001b42b95f08344ce8450896915d47ed5f3c8f29f7fb99c580f72efe2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x802D 9948 bytes

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