Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d06efc4bbd795ef…

MALICIOUS

PDF

48.9 KB Authoring application: Karbon
MD5: c24181f629b478e816d5fa732b0ecffb SHA-1: 0785695a063f9388481eae4c3e039ab103c03d68 SHA-256: 3d06efc4bbd795ef9488867f582a542a4842d42d556c3a2bda3eb2e17930ee77
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to phishing or malware distribution sites. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious. The document body was unreadable, but the heuristic firings strongly indicate a malicious intent related to link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://tackylightstoursrichmondvarva.us/uploads/1/3/0/6/130639045/wularamojipoza.pdf
    • http://koinlando.com/uploads/1/3/0/7/130776889/gudusomamup_dasowamumepo_lasatiwebifin_fokevil.pdf
    • http://neohiofishingsupply.com/uploads/1/3/0/2/130273584/5f4d3161f8aded.pdf
    • http://www.sjperformance.com/uploads/1/3/0/2/130289201/2ad7c3a.pdf
    • http://www.ledsa.co.uk/uploads/1/3/0/2/130289618/253332.pdf
    • http://constructiondiaries.net/uploads/1/3/0/6/130621180/sutatukibif_vilaxuzin_jexarob.pdf
    • http://thepinkmews.com/uploads/1/3/0/6/130621490/4832753.pdf
    • http://paramountbuilders.co.uk/uploads/1/3/0/7/130775792/8209432.pdf
    • http://bellamueller.com/uploads/1/3/0/7/130740046/5150489.pdf
    • http://www.wesquare.com/uploads/1/3/0/6/130605173/losupurofopitofelawu.pdf
    • http://acmehempcompany.com/uploads/1/3/0/5/130588968/2ed37e0e63.pdf
    • http://soyceroexcusas.com/uploads/1/3/0/2/130288483/tagirojabi.pdf
    • http://x0847515xstreamtravel.xsideas.com/uploads/1/3/0/9/130969813/130969813.html#relative+income+poverty+lines

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d97.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D97 16036 bytes
font_01_sfnt_off00006509.bin
ece91d659813f169d2e0836b7e6e281fdb9af158d3323acb09f917e58f25b219		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6509 8892 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.