Malicious PDF — malware analysis report

Static analysis result for SHA-256 a15f847951b3ef45…

MALICIOUS

PDF

38.6 KB Created: 2020-09-15 15:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02bc9a4ec8101df7433f9556cb7ac86d SHA-1: 6adc45073af5e2bbdca14a6b055403d24e882ddf SHA-256: a15f847951b3ef4504b69c85861c0e0858b74cb009379de6fc4441e8dc634ad8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The primary intent is to redirect the user to malicious websites.

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/wb?keyword=pelicula%20de%20enchufe%20tv%20dedicada%20a%20mi%20ex%20completa%20online
    • http://wavug.centraldrivewaysstratford.co.uk/uploads/1/3/0/9/130969260/toxido_baragolakobalu_vateve.pdf
    • http://migumop.contactparanormalresearch.com/uploads/1/3/2/6/132681670/jinozataleweramot.pdf
    • http://files.sinthiacousineau.com/uploads/1/3/0/7/130775366/2315744.pdf
    • http://batexozap.moeglitzxglam.com/uploads/1/3/1/3/131383483/7894892.pdf
    • http://ginonaweb.candicechristie.co.za/uploads/1/3/1/0/131069934/mewewetawitif.pdf
    • http://xaxinet.sociallysquared.com.au/uploads/1/3/1/4/131407181/0412b.pdf
    • http://pikife.pregnancyloss.org/uploads/1/3/1/1/131163898/bipasujala.pdf
    • http://tekure.northmayohorsesanctuary.com/uploads/1/3/0/7/130776756/vifaloromugupo_dobobuwa.pdf
    • http://files.rannveigkaradottirsoprano.com/uploads/1/3/0/9/130970003/9315587.pdf
    • http://files.ambcircleoffriends.com/uploads/1/3/1/4/131482916/3554244.pdf
    • https://static.usrfiles.com/ugd/03f576_bcf633fb2d8e4dd3bcca5952a0dc5c40.pdf
    • https://static.usrfiles.com/ugd/82e28d_e34635ddcb6a47d3a44272df7b3d0fd9.pdf
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/zigelofujogov.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/rumogufosoj.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_off0000562d.bin
f2041e0e4f29bf380c0840414382539457269e22ffe99bf504cae4e368c727ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x562D 5252 bytes
font_01_sfnt_off000067fa.bin
10bb530af00f1ab0254d2bd8ea5e06af9729367b680e633fb779a9dfba579fbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67FA 10828 bytes

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