Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c4731f39d5cdbd…

MALICIOUS

PDF

40.3 KB Authoring application: Inkscape
MD5: 2db6657ab90eadf1dbd43916725b32ec SHA-1: 581215488c0967c95ee17b387af129147378101e SHA-256: d9c4731f39d5cdbd288ab1991d634a09c1a4eaba0187fe24d1d92a220cbc7487
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary malicious URL identified is http://loribede.olsi-tex.ru/uploads/2020/01/29/gurotumiwoxu-gepapililux-zudaj.pdf. This suggests a phishing or SEO spam campaign, aiming to redirect users to potentially malicious content hosted on numerous domains.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://loribede.olsi-tex.ru/uploads/2020/01/29/gurotumiwoxu-gepapililux-zudaj.pdf
    • http://mounceclass.weebly.com/uploads/1/3/0/6/130604307/9471941.pdf
    • http://btctree.net/uploads/1/3/0/5/130588188/1150874.pdf
    • http://neutress.net/uploads/1/3/0/2/130270834/6324863.pdf
    • http://mykayscreations.com/uploads/1/3/0/5/130539440/dbe8d3191.pdf
    • http://triumphantlawnandlandscapeservices.com/uploads/1/3/0/5/130550663/1425348.pdf
    • http://miko-trans.pl/uploads/1/3/0/6/130639953/moruwupijonis-tajexadinuk-nukaj.pdf
    • http://pathproduct.com/uploads/1/3/0/5/130588438/sexom.pdf
    • http://nekima.net/uploads/1/3/0/6/130603927/4456040.pdf
    • http://myuschamifc.com/uploads/1/3/0/2/130289063/30b12.pdf
    • http://amandlastenberg.com/uploads/1/3/0/5/130551095/firetopejez.pdf
    • http://powajata.maxtonplains.com/uploads/2020/01/28/tixabawanut.pdf
    • http://mysonnyrae.com/uploads/1/3/0/6/130639540/130639540.html#wondershare+data+recovery+full+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012d6.bin
bb5e0e1c898aa5301cdace08879bb6ae2d95bd19bd1b29d13571bd6221fdd503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6 8332 bytes

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