Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a8bad4ba57daa8…

MALICIOUS

PDF

39.3 KB Authoring application: Inkscape
MD5: cd1efc68f53852428dae91cca09a2d11 SHA-1: 34eb2349375838cc19fbca1e15aadb6382ee1e9f SHA-256: 47a8bad4ba57daa8b6cdbde743f2a2bbecf2d13b002c876b4e4b7e60f178cb99
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique commonly used in SEO spam and phishing campaigns to drive traffic to malicious sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly indicate this malicious intent. The document body itself appears to be corrupted or contains non-readable content, but the presence of numerous URLs pointing to potentially compromised or malicious domains is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://abetterwaytobreathe.com/uploads/1/3/0/4/130476624/3a7f6187cddfa.pdf
    • http://sensaur.com/uploads/1/3/0/2/130287866/6ad91a290c5628.pdf
    • http://my-medicare-insurance.com/uploads/1/3/0/6/130621625/0930b50086.pdf
    • http://lakeriverlab.org/uploads/1/3/0/6/130605084/8618368.pdf
    • http://debris.studio/uploads/1/3/0/7/130739070/5649893.pdf
    • http://mail.debbiepadnuk.com/uploads/1/3/0/2/130288301/2834569.pdf
    • http://barnatstonewood.com/uploads/1/3/0/7/130776221/dufuvofefafa-xaxonizelunedon-pamevegugubawo-bijedi.pdf
    • http://northeastwildernesscompany.com/uploads/1/3/0/6/130639956/gitegezo-xedujiguxeki-mowewefodonexa.pdf
    • http://stjohnslutheranchurchjenison.org/uploads/1/3/0/6/130620755/9252783.pdf
    • http://eldesvandeekolu.com/uploads/1/3/0/7/130775768/fanukawire-revilutafonib.pdf
    • http://casadellostudentevillagiulia.com/uploads/1/3/0/4/130483494/829bbc.pdf
    • http://detourmovement.org/uploads/1/3/0/2/130271152/sewew.pdf
    • http://hughheffner.net/uploads/1/3/0/6/130639965/df1951f19dd8030.pdf
    • http://sarahpounds.com/uploads/1/3/0/4/130483187/wokovem.pdf
    • http://fby4.com/uploads/1/3/0/3/130323568/regopaxivuxureno.pdf
    • http://remarkablecanine.com/uploads/1/3/0/6/130604896/sagijoxugo-jupigonufo-zerozanajuj.pdf
    • http://host238.carmichaelnl.com/uploads/1/3/0/7/130774970/130774970.html#blender+move+3d+cursor+to+origin

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f22.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F22 2652 bytes
font_01_sfnt_off00003b3f.bin
69cf0629e763ee349f7acd437bcc2aa5c490c0e9c8f729528047bc104422f205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B3F 8584 bytes

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