Malicious PDF — malware analysis report

Static analysis result for SHA-256 c16b5ba45cb6ab29…

MALICIOUS

PDF

48.0 KB Created: 2020-04-02 05:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 97af88eccb54bd78a19cf17cf6d20dbd SHA-1: 320d3d24b40119ee9ae7990d71182bdf0206c82d SHA-256: c16b5ba45cb6ab296b71c824c70c2461f5d660a3bc5d4a72efa4a6f78d862a96
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains references to URLs, including http://heliosrenewablesinc.com/uploads/1/3/1/4/131438898/131438898.html#la+tabla+periodica+moderna+y+sus+caracteristicas. This suggests the primary purpose is to direct users to a network of websites, 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://heliosrenewablesinc.com/uploads/1/3/1/4/131438898/131438898.html#la+tabla+periodica+moderna+y+sus+caracteristicas
    • http://urbancapitalfunding.com/uploads/1/3/0/2/130289377/dirijesaxok_pukumigetodixaj.pdf
    • http://ebrokeronlinerealty.com/uploads/1/3/0/4/130436139/wogofipu.pdf
    • http://rockymountainmamabear.com/uploads/1/3/0/6/130604612/3891436.pdf
    • http://kerikoppendrayer.com/uploads/1/3/0/3/130323301/6738cca13250648.pdf
    • http://elevenoaksmobilehomepark.com/uploads/1/3/1/3/131384718/wasusew-ditajigove-sepamujibetej.pdf
    • http://newyorktravelmedicine.com/uploads/1/3/0/7/130774964/jubibikow.pdf
    • http://pplansplus.com/uploads/1/3/1/1/131164383/noforedoji.pdf
    • http://unftrd.org/uploads/1/3/0/6/130620449/8d60fd9ca70.pdf
    • http://mycernitin.com/uploads/1/3/0/6/130640029/2865494.pdf
    • http://intimatetouchhealing.com/uploads/1/3/0/6/130620644/d63914fb.pdf
    • http://allieplatt.com/uploads/1/3/0/5/130550731/xokakawosalesatu.pdf
    • http://gunflintmktggroup.com/uploads/1/3/0/2/130289386/bd6bcc1.pdf
    • http://forumlogistics.eu/uploads/1/3/0/2/130289723/tujokoz.pdf
    • http://windsoractive.com/uploads/1/3/0/5/130588982/e17431df9beaa3a.pdf
    • http://mygfbc.com/uploads/1/3/0/7/130739163/runitin.pdf
    • http://theinkparlourkelowna.ca/uploads/1/3/1/3/131384675/5798263.pdf
    • http://cerebroyaula.org/uploads/1/3/0/6/130639652/4488322.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_off00007c23.bin
d29d7696f84057a029e1af63b43e321d62b16f6170ce66b5decff2a1d036dccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C23 8700 bytes
font_01_sfnt_off00009b90.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B90 16036 bytes

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