Malicious PDF — malware analysis report

Static analysis result for SHA-256 228b3247974939c7…

MALICIOUS

PDF

49.4 KB Created: 2020-04-10 17:22:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c3ff9383dd77e8891a03e17606e779e4 SHA-1: eaf7aa63ccd8dfda438a067632b3ec233dabf76e SHA-256: 228b3247974939c78abe4b7ee6c8ba0dce6a83073566e543fef0f85f1c09591b
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains URLs that are also present in the list of extracted URLs. The primary function appears to be directing users to a vast network of external sites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://indiamarilyn.com/uploads/1/3/1/4/131438483/131438483.html#raspberry+pi+no+wireless+interfaces
    • http://shopwithjacques.com/uploads/1/3/0/5/130550672/fafisagukutudelim.pdf
    • http://iamgood.ca/uploads/1/3/0/9/130969991/21c1356c3ce36.pdf
    • http://blackmagiccurse.com/uploads/1/3/0/7/130775257/1051684.pdf
    • http://shopbykddesigns.com/uploads/1/3/1/3/131382583/sulomikapokase.pdf
    • http://borgorossodisera.com/uploads/1/3/0/8/130814783/5c8bd987bb90.pdf
    • http://kalenpippins.com/uploads/1/3/0/5/130550758/gixowulakokiw-bakaned-tabezinoxetufup-tuwukeret.pdf
    • http://wedoboatinsurance.com/uploads/1/3/0/8/130813648/nujixikipupuxiv.pdf
    • http://slaughters-bullies.com/uploads/1/3/0/8/130814295/e9b43b.pdf
    • http://schutzspiegel.net/uploads/1/3/0/7/130775987/dafevobabitera.pdf
    • http://bridlehorse.com/uploads/1/3/0/2/130289204/1037594.pdf
    • http://northchannelnetwork.org/uploads/1/3/0/6/130639642/47fd1f00310181c.pdf
    • http://pplacegearshop.org/uploads/1/3/0/5/130588702/lidugepitatozuxigovi.pdf
    • http://thetasteofsaba.com/uploads/1/3/1/3/131398027/b266f89af21a536.pdf
    • http://intellibelly.net/uploads/1/3/0/2/130289340/6871534.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_off00008e5d.bin
a76ee4dc95ad5d086cecbf1aea55908de4c672205b3a89433701a7e78ae256ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5D 8688 bytes
font_01_sfnt_off0000aff3.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFF3 2652 bytes

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