Malicious PDF — malware analysis report

Static analysis result for SHA-256 9442bc0d63e87087…

MALICIOUS

PDF

46.0 KB Created: 2020-07-25 23:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81faf04cc3c26ea9edf0a98156bf4b34 SHA-1: 289b79be74e1beb13b596719efd0168f7af873cd SHA-256: 9442bc0d63e870879f35069f26073f936cf0604d6d868a5b3f34a91186d5c4dc
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'break even analysis'. The presence of numerous external links, including a large link farm hosted on Shopify, suggests an attempt to distribute malicious content or engage in SEO poisoning. The primary malicious IOC is the redirector URL, which likely leads to further stages of an attack.

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=break+even+analysis+pdf
    • http://files.beadsbraidsknots.co.uk/uploads/1/3/1/4/131452997/kejemufaxofufi_viwepip_bezogemozekov_kuvoxur.pdf
    • http://files.ginstephens.com/uploads/1/3/2/7/132712129/3953995.pdf
    • http://files.tynksgemstonedesigns.com/uploads/1/3/2/7/132740415/7381d2f1749d4.pdf
    • http://files.shannonsjewelrybar.com/uploads/1/3/2/6/132696604/kexodewosujewutikere.pdf
    • http://files.projecteva.org/uploads/1/3/0/7/130738503/3689427.pdf
    • http://files.projecteva.org/uploads/1/3/0/7
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/71612366466.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/97069669683.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/fedebazikefudepu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6467/files/33510170555.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/sekuxole.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/nelilo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/79857279123.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4447/files/68815491665.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/lefisasen.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/masisagitelamoxesoxojibo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/36336415736.pdf
    • https://cdn.shopify.com/s/files/1/0436/4982/6969/files/nevokuj.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_off00007815.bin
1873a5d70a34f226f05f59807c8489b09594003601b1e958c6abb980964b1e36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7815 4908 bytes
font_01_sfnt_off000088d1.bin
f0c2c9c8fcd3bf7e597856c9124c60301908443a641861e6819d89885aca5e36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D1 9980 bytes

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