Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a94178c7233d06…

MALICIOUS

PDF

55.0 KB Created: 2020-08-08 18:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bed842dc0c1358fef3ebf1330c9e2f2c SHA-1: edfdc9bb663efddb39736eae18a2250d6811bc2b SHA-256: e2a94178c7233d06c4982b44c0dfd4dd6d5c0617ce18d7a624c42e20b15214f8
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting an attempt to lure users to malicious content. The presence of numerous shopify.com links indicates a potential link farm strategy.

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.cc/pify?keyword=monitoring+and+evaluation+tools+and+frameworks+pdf
    • http://files.nottinghamorthodox.org.uk/uploads/1/3/0/7/130775974/jufimutanod.pdf
    • http://files.ericahitzmanart.com/uploads/1/3/1/6/131637482/luvuxe.pdf
    • http://files.hello-baby-toys.com/uploads/1/3/1/4/131453807/4352687.pdf
    • https://cdn.shopify.com/s/files/1/0437/8741/9806/files/41797917544.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/16511080824.pdf
    • https://cdn.shopify.com/s/files/1/0434/8303/7860/files/66024519218.pdf
    • https://cdn.shopify.com/s/files/1/0431/3245/3015/files/pogodejimeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/40050113226.pdf
    • https://cdn.shopify.com/s/files/1/0434/4689/4758/files/collected_short_stories_jeffrey_archer.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/61318083253.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/wujatowawilavag.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/nurekoxogiliramagovi.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/good_will_hunting_screenplay.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5897/files/73423286016.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/young_dolph_preach_mp3.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_off000089bc.bin
8793cc846c53e3c67b75d748517fb53ea164f62f04e48b5932369eeb5ed33eb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89BC 5464 bytes
font_01_sfnt_off00009c58.bin
0d965e97a463cec8c8dd44f38f56933b5024e6fbc206a210537985f552495963		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C58 10528 bytes
font_02_sfnt_off0000c053.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC053 4324 bytes

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